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Finding the Fourth Proportional to 92,761.70, 128,011.17 and 52,474.59

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Solution

The fourth proportional to 92,761.70, 128,011.17 and 52,474.59 is: 72,414.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,761.70 : 128,011.17 = 52,474.59 : x
  2. Step 2: Convert to fraction form
    92,761.70/128,011.17 = 52,474.59/x
  3. Step 3: Cross multiply
    92,761.70x = 128,011.17 × 52,474.59
  4. Step 4: Simplify right side
    92,761.70x = 6,717,333,661.17
  5. Step 5: Solve for x
    x = 6,717,333,661.17/92,761.70
  6. Step 6: Final answer
    x = 72,414.95

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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.