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Finding the Fourth Proportional to 66,691.10, 92,046.03 and 42,847.58

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Solution

The fourth proportional to 66,691.10, 92,046.03 and 42,847.58 is: 59,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,691.10 : 92,046.03 = 42,847.58 : x
  2. Step 2: Convert to fraction form
    66,691.10/92,046.03 = 42,847.58/x
  3. Step 3: Cross multiply
    66,691.10x = 92,046.03 × 42,847.58
  4. Step 4: Simplify right side
    66,691.10x = 3,943,949,634.11
  5. Step 5: Solve for x
    x = 3,943,949,634.11/66,691.10
  6. Step 6: Final answer
    x = 59,137.57

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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.