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Finding the Fourth Proportional to 124,950.80, 187,426.20 and 72,495.20

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Solution

The fourth proportional to 124,950.80, 187,426.20 and 72,495.20 is: 108,742.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,950.80 : 187,426.20 = 72,495.20 : x
  2. Step 2: Convert to fraction form
    124,950.80/187,426.20 = 72,495.20/x
  3. Step 3: Cross multiply
    124,950.80x = 187,426.20 × 72,495.20
  4. Step 4: Simplify right side
    124,950.80x = 13,587,499,854.24
  5. Step 5: Solve for x
    x = 13,587,499,854.24/124,950.80
  6. Step 6: Final answer
    x = 108,742.80

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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.