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Finding the Fourth Proportional to 571,920.80, 857,881.20 and 216,816.80

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Solution

The fourth proportional to 571,920.80, 857,881.20 and 216,816.80 is: 325,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,920.80 : 857,881.20 = 216,816.80 : x
  2. Step 2: Convert to fraction form
    571,920.80/857,881.20 = 216,816.80/x
  3. Step 3: Cross multiply
    571,920.80x = 857,881.20 × 216,816.80
  4. Step 4: Simplify right side
    571,920.80x = 186,003,056,564.16
  5. Step 5: Solve for x
    x = 186,003,056,564.16/571,920.80
  6. Step 6: Final answer
    x = 325,225.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.