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Finding the Fourth Proportional to 719,376.07, 992,734.17 and 392,687.77

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Solution

The fourth proportional to 719,376.07, 992,734.17 and 392,687.77 is: 541,906.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,376.07 : 992,734.17 = 392,687.77 : x
  2. Step 2: Convert to fraction form
    719,376.07/992,734.17 = 392,687.77/x
  3. Step 3: Cross multiply
    719,376.07x = 992,734.17 × 392,687.77
  4. Step 4: Simplify right side
    719,376.07x = 389,834,567,420.10
  5. Step 5: Solve for x
    x = 389,834,567,420.10/719,376.07
  6. Step 6: Final answer
    x = 541,906.50

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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.