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Finding the Fourth Proportional to 719,265.70, 992,588.70 and 392,581.72

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Solution

The fourth proportional to 719,265.70, 992,588.70 and 392,581.72 is: 541,763.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,265.70 : 992,588.70 = 392,581.72 : x
  2. Step 2: Convert to fraction form
    719,265.70/992,588.70 = 392,581.72/x
  3. Step 3: Cross multiply
    719,265.70x = 992,588.70 × 392,581.72
  4. Step 4: Simplify right side
    719,265.70x = 389,672,179,098.56
  5. Step 5: Solve for x
    x = 389,672,179,098.56/719,265.70
  6. Step 6: Final answer
    x = 541,763.88

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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.