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Finding the Fourth Proportional to 124,908.60, 187,449.30 and 89,873.40

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Solution

The fourth proportional to 124,908.60, 187,449.30 and 89,873.40 is: 134,872.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,908.60 : 187,449.30 = 89,873.40 : x
  2. Step 2: Convert to fraction form
    124,908.60/187,449.30 = 89,873.40/x
  3. Step 3: Cross multiply
    124,908.60x = 187,449.30 × 89,873.40
  4. Step 4: Simplify right side
    124,908.60x = 16,846,705,918.62
  5. Step 5: Solve for x
    x = 16,846,705,918.62/124,908.60
  6. Step 6: Final answer
    x = 134,872.27

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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.