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Finding the Fourth Proportional to 79,057.71, 118,602.42 and 29,138.04

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Solution

The fourth proportional to 79,057.71, 118,602.42 and 29,138.04 is: 43,712.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,057.71 : 118,602.42 = 29,138.04 : x
  2. Step 2: Convert to fraction form
    79,057.71/118,602.42 = 29,138.04/x
  3. Step 3: Cross multiply
    79,057.71x = 118,602.42 × 29,138.04
  4. Step 4: Simplify right side
    79,057.71x = 3,455,842,058.06
  5. Step 5: Solve for x
    x = 3,455,842,058.06/79,057.71
  6. Step 6: Final answer
    x = 43,712.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.