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Finding the Fourth Proportional to 696,004.80, 972,307.20 and 696,004.80

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Solution

The fourth proportional to 696,004.80, 972,307.20 and 696,004.80 is: 972,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,004.80 : 972,307.20 = 696,004.80 : x
  2. Step 2: Convert to fraction form
    696,004.80/972,307.20 = 696,004.80/x
  3. Step 3: Cross multiply
    696,004.80x = 972,307.20 × 696,004.80
  4. Step 4: Simplify right side
    696,004.80x = 676,730,478,274.56
  5. Step 5: Solve for x
    x = 676,730,478,274.56/696,004.80
  6. Step 6: Final answer
    x = 972,307.20

Related Problems

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Half scale
Find fourth proportional to 1,392,009.60, 1,944,614.40 and 1,392,009.60
Double scale
Find fourth proportional to 696,005.80, 972,308.60 and 696,005.80
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.