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Finding the Fourth Proportional to 66,981.59, 92,385.86 and 44,339.97

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Solution

The fourth proportional to 66,981.59, 92,385.86 and 44,339.97 is: 61,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,981.59 : 92,385.86 = 44,339.97 : x
  2. Step 2: Convert to fraction form
    66,981.59/92,385.86 = 44,339.97/x
  3. Step 3: Cross multiply
    66,981.59x = 92,385.86 × 44,339.97
  4. Step 4: Simplify right side
    66,981.59x = 4,096,386,039.12
  5. Step 5: Solve for x
    x = 4,096,386,039.12/66,981.59
  6. Step 6: Final answer
    x = 61,156.90

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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.