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Finding the Fourth Proportional to 113,772.42, 170,531.42 and 42,626.61

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Solution

The fourth proportional to 113,772.42, 170,531.42 and 42,626.61 is: 63,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,772.42 : 170,531.42 = 42,626.61 : x
  2. Step 2: Convert to fraction form
    113,772.42/170,531.42 = 42,626.61/x
  3. Step 3: Cross multiply
    113,772.42x = 170,531.42 × 42,626.61
  4. Step 4: Simplify right side
    113,772.42x = 7,269,176,119.95
  5. Step 5: Solve for x
    x = 7,269,176,119.95/113,772.42
  6. Step 6: Final answer
    x = 63,892.25

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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.