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Finding the Fourth Proportional to 124,772.90, 187,167.45 and 65,723.90

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Solution

The fourth proportional to 124,772.90, 187,167.45 and 65,723.90 is: 98,590.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,772.90 : 187,167.45 = 65,723.90 : x
  2. Step 2: Convert to fraction form
    124,772.90/187,167.45 = 65,723.90/x
  3. Step 3: Cross multiply
    124,772.90x = 187,167.45 × 65,723.90
  4. Step 4: Simplify right side
    124,772.90x = 12,301,374,767.06
  5. Step 5: Solve for x
    x = 12,301,374,767.06/124,772.90
  6. Step 6: Final answer
    x = 98,590.12

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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.