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Finding the Fourth Proportional to 89,981.88, 124,175.52 and 49,694.88

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Solution

The fourth proportional to 89,981.88, 124,175.52 and 49,694.88 is: 68,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,981.88 : 124,175.52 = 49,694.88 : x
  2. Step 2: Convert to fraction form
    89,981.88/124,175.52 = 49,694.88/x
  3. Step 3: Cross multiply
    89,981.88x = 124,175.52 × 49,694.88
  4. Step 4: Simplify right side
    89,981.88x = 6,170,887,565.34
  5. Step 5: Solve for x
    x = 6,170,887,565.34/89,981.88
  6. Step 6: Final answer
    x = 68,579.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.