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Finding the Fourth Proportional to 66,575.78, 99,863.67 and 27,125.95

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Solution

The fourth proportional to 66,575.78, 99,863.67 and 27,125.95 is: 40,688.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,575.78 : 99,863.67 = 27,125.95 : x
  2. Step 2: Convert to fraction form
    66,575.78/99,863.67 = 27,125.95/x
  3. Step 3: Cross multiply
    66,575.78x = 99,863.67 × 27,125.95
  4. Step 4: Simplify right side
    66,575.78x = 2,708,896,919.24
  5. Step 5: Solve for x
    x = 2,708,896,919.24/66,575.78
  6. Step 6: Final answer
    x = 40,688.93

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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.