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Finding the Fourth Proportional to 719,005.93, 992,248.96 and 396,736.79

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Solution

The fourth proportional to 719,005.93, 992,248.96 and 396,736.79 is: 547,508.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,005.93 : 992,248.96 = 396,736.79 : x
  2. Step 2: Convert to fraction form
    719,005.93/992,248.96 = 396,736.79/x
  3. Step 3: Cross multiply
    719,005.93x = 992,248.96 × 396,736.79
  4. Step 4: Simplify right side
    719,005.93x = 393,661,663,798.77
  5. Step 5: Solve for x
    x = 393,661,663,798.77/719,005.93
  6. Step 6: Final answer
    x = 547,508.23

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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.