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Finding the Fourth Proportional to 719,349.73, 992,726.76 and 392,682.13

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Solution

The fourth proportional to 719,349.73, 992,726.76 and 392,682.13 is: 541,914.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,349.73 : 992,726.76 = 392,682.13 : x
  2. Step 2: Convert to fraction form
    719,349.73/992,726.76 = 392,682.13/x
  3. Step 3: Cross multiply
    719,349.73x = 992,726.76 × 392,682.13
  4. Step 4: Simplify right side
    719,349.73x = 389,826,058,624.80
  5. Step 5: Solve for x
    x = 389,826,058,624.80/719,349.73
  6. Step 6: Final answer
    x = 541,914.51

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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.