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Finding the Fourth Proportional to 29,486.79, 40,691.21 and 16,057.89

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Solution

The fourth proportional to 29,486.79, 40,691.21 and 16,057.89 is: 22,159.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,486.79 : 40,691.21 = 16,057.89 : x
  2. Step 2: Convert to fraction form
    29,486.79/40,691.21 = 16,057.89/x
  3. Step 3: Cross multiply
    29,486.79x = 40,691.21 × 16,057.89
  4. Step 4: Simplify right side
    29,486.79x = 653,414,893.86
  5. Step 5: Solve for x
    x = 653,414,893.86/29,486.79
  6. Step 6: Final answer
    x = 22,159.58

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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.