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Finding the Fourth Proportional to 105,761.60, 158,591.36 and 61,399.52

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Solution

The fourth proportional to 105,761.60, 158,591.36 and 61,399.52 is: 92,069.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,761.60 : 158,591.36 = 61,399.52 : x
  2. Step 2: Convert to fraction form
    105,761.60/158,591.36 = 61,399.52/x
  3. Step 3: Cross multiply
    105,761.60x = 158,591.36 × 61,399.52
  4. Step 4: Simplify right side
    105,761.60x = 9,737,432,587.19
  5. Step 5: Solve for x
    x = 9,737,432,587.19/105,761.60
  6. Step 6: Final answer
    x = 92,069.65

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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.