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Finding the Fourth Proportional to 68,899.77, 95,092.08 and 42,057.90

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Solution

The fourth proportional to 68,899.77, 95,092.08 and 42,057.90 is: 58,046.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899.77 : 95,092.08 = 42,057.90 : x
  2. Step 2: Convert to fraction form
    68,899.77/95,092.08 = 42,057.90/x
  3. Step 3: Cross multiply
    68,899.77x = 95,092.08 × 42,057.90
  4. Step 4: Simplify right side
    68,899.77x = 3,999,373,191.43
  5. Step 5: Solve for x
    x = 3,999,373,191.43/68,899.77
  6. Step 6: Final answer
    x = 58,046.25

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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.