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Finding the Fourth Proportional to 124,751.10, 187,244.10 and 65,629.20

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Solution

The fourth proportional to 124,751.10, 187,244.10 and 65,629.20 is: 98,505.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,751.10 : 187,244.10 = 65,629.20 : x
  2. Step 2: Convert to fraction form
    124,751.10/187,244.10 = 65,629.20/x
  3. Step 3: Cross multiply
    124,751.10x = 187,244.10 × 65,629.20
  4. Step 4: Simplify right side
    124,751.10x = 12,288,680,487.72
  5. Step 5: Solve for x
    x = 12,288,680,487.72/124,751.10
  6. Step 6: Final answer
    x = 98,505.59

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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.