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Finding the Fourth Proportional to 719,171.73, 992,456.01 and 396,881.91

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Solution

The fourth proportional to 719,171.73, 992,456.01 and 396,881.91 is: 547,696.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,171.73 : 992,456.01 = 396,881.91 : x
  2. Step 2: Convert to fraction form
    719,171.73/992,456.01 = 396,881.91/x
  3. Step 3: Cross multiply
    719,171.73x = 992,456.01 × 396,881.91
  4. Step 4: Simplify right side
    719,171.73x = 393,887,836,839.78
  5. Step 5: Solve for x
    x = 393,887,836,839.78/719,171.73
  6. Step 6: Final answer
    x = 547,696.50

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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.