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Finding the Fourth Proportional to 719,375.07, 992,732.79 and 392,686.77

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Solution

The fourth proportional to 719,375.07, 992,732.79 and 392,686.77 is: 541,905.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,375.07 : 992,732.79 = 392,686.77 : x
  2. Step 2: Convert to fraction form
    719,375.07/992,732.79 = 392,686.77/x
  3. Step 3: Cross multiply
    719,375.07x = 992,732.79 × 392,686.77
  4. Step 4: Simplify right side
    719,375.07x = 389,833,032,778.19
  5. Step 5: Solve for x
    x = 389,833,032,778.19/719,375.07
  6. Step 6: Final answer
    x = 541,905.12

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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.