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Finding the Fourth Proportional to 79,314.20, 118,737.56 and 69,472.70

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Solution

The fourth proportional to 79,314.20, 118,737.56 and 69,472.70 is: 104,004.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,314.20 : 118,737.56 = 69,472.70 : x
  2. Step 2: Convert to fraction form
    79,314.20/118,737.56 = 69,472.70/x
  3. Step 3: Cross multiply
    79,314.20x = 118,737.56 × 69,472.70
  4. Step 4: Simplify right side
    79,314.20x = 8,249,018,884.61
  5. Step 5: Solve for x
    x = 8,249,018,884.61/79,314.20
  6. Step 6: Final answer
    x = 104,004.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.