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Finding the Fourth Proportional to 68,899.76, 95,092.06 and 42,057.88

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Solution

The fourth proportional to 68,899.76, 95,092.06 and 42,057.88 is: 58,046.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,899.76 : 95,092.06 = 42,057.88 : x
  2. Step 2: Convert to fraction form
    68,899.76/95,092.06 = 42,057.88/x
  3. Step 3: Cross multiply
    68,899.76x = 95,092.06 × 42,057.88
  4. Step 4: Simplify right side
    68,899.76x = 3,999,370,448.43
  5. Step 5: Solve for x
    x = 3,999,370,448.43/68,899.76
  6. Step 6: Final answer
    x = 58,046.22

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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.