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Finding the Fourth Proportional to 113,590.58, 156,755.13 and 65,871.66

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Solution

The fourth proportional to 113,590.58, 156,755.13 and 65,871.66 is: 90,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,590.58 : 156,755.13 = 65,871.66 : x
  2. Step 2: Convert to fraction form
    113,590.58/156,755.13 = 65,871.66/x
  3. Step 3: Cross multiply
    113,590.58x = 156,755.13 × 65,871.66
  4. Step 4: Simplify right side
    113,590.58x = 10,325,720,626.62
  5. Step 5: Solve for x
    x = 10,325,720,626.62/113,590.58
  6. Step 6: Final answer
    x = 90,902.97

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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.