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Finding the Fourth Proportional to 719,350.73, 992,728.14 and 392,683.13

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Solution

The fourth proportional to 719,350.73, 992,728.14 and 392,683.13 is: 541,915.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,350.73 : 992,728.14 = 392,683.13 : x
  2. Step 2: Convert to fraction form
    719,350.73/992,728.14 = 392,683.13/x
  3. Step 3: Cross multiply
    719,350.73x = 992,728.14 × 392,683.13
  4. Step 4: Simplify right side
    719,350.73x = 389,827,593,254.28
  5. Step 5: Solve for x
    x = 389,827,593,254.28/719,350.73
  6. Step 6: Final answer
    x = 541,915.89

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Double scale
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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.