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Finding the Fourth Proportional to 124,714.80, 187,072.20 and 120,049.20

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Solution

The fourth proportional to 124,714.80, 187,072.20 and 120,049.20 is: 180,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,714.80 : 187,072.20 = 120,049.20 : x
  2. Step 2: Convert to fraction form
    124,714.80/187,072.20 = 120,049.20/x
  3. Step 3: Cross multiply
    124,714.80x = 187,072.20 × 120,049.20
  4. Step 4: Simplify right side
    124,714.80x = 22,457,867,952.24
  5. Step 5: Solve for x
    x = 22,457,867,952.24/124,714.80
  6. Step 6: Final answer
    x = 180,073.80

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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.