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Finding the Fourth Proportional to 877,392.76, 1,210,802.42 and 474,984.76

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Solution

The fourth proportional to 877,392.76, 1,210,802.42 and 474,984.76 is: 655,479.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,392.76 : 1,210,802.42 = 474,984.76 : x
  2. Step 2: Convert to fraction form
    877,392.76/1,210,802.42 = 474,984.76/x
  3. Step 3: Cross multiply
    877,392.76x = 1,210,802.42 × 474,984.76
  4. Step 4: Simplify right side
    877,392.76x = 575,112,696,871.12
  5. Step 5: Solve for x
    x = 575,112,696,871.12/877,392.76
  6. Step 6: Final answer
    x = 655,479.19

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Half scale
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Double scale
Find fourth proportional to 877,393.76, 1,210,803.80 and 474,985.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.