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Finding the Fourth Proportional to 124,713.10, 187,187.10 and 65,591.20

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Solution

The fourth proportional to 124,713.10, 187,187.10 and 65,591.20 is: 98,448.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,713.10 : 187,187.10 = 65,591.20 : x
  2. Step 2: Convert to fraction form
    124,713.10/187,187.10 = 65,591.20/x
  3. Step 3: Cross multiply
    124,713.10x = 187,187.10 × 65,591.20
  4. Step 4: Simplify right side
    124,713.10x = 12,277,826,513.52
  5. Step 5: Solve for x
    x = 12,277,826,513.52/124,713.10
  6. Step 6: Final answer
    x = 98,448.57

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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.