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Finding the Fourth Proportional to 719,191.44, 992,508.03 and 392,522.31

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Solution

The fourth proportional to 719,191.44, 992,508.03 and 392,522.31 is: 541,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,191.44 : 992,508.03 = 392,522.31 : x
  2. Step 2: Convert to fraction form
    719,191.44/992,508.03 = 392,522.31/x
  3. Step 3: Cross multiply
    719,191.44x = 992,508.03 × 392,522.31
  4. Step 4: Simplify right side
    719,191.44x = 389,581,544,629.15
  5. Step 5: Solve for x
    x = 389,581,544,629.15/719,191.44
  6. Step 6: Final answer
    x = 541,693.80

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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.