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Finding the Fourth Proportional to 124,838.85, 187,305.41 and 74,953.72

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Solution

The fourth proportional to 124,838.85, 187,305.41 and 74,953.72 is: 112,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,838.85 : 187,305.41 = 74,953.72 : x
  2. Step 2: Convert to fraction form
    124,838.85/187,305.41 = 74,953.72/x
  3. Step 3: Cross multiply
    124,838.85x = 187,305.41 × 74,953.72
  4. Step 4: Simplify right side
    124,838.85x = 14,039,236,974.75
  5. Step 5: Solve for x
    x = 14,039,236,974.75/124,838.85
  6. Step 6: Final answer
    x = 112,458.88

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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.