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Finding the Fourth Proportional to 94,691.60, 142,003.80 and 42,006.80

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Solution

The fourth proportional to 94,691.60, 142,003.80 and 42,006.80 is: 62,995.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,691.60 : 142,003.80 = 42,006.80 : x
  2. Step 2: Convert to fraction form
    94,691.60/142,003.80 = 42,006.80/x
  3. Step 3: Cross multiply
    94,691.60x = 142,003.80 × 42,006.80
  4. Step 4: Simplify right side
    94,691.60x = 5,965,125,225.84
  5. Step 5: Solve for x
    x = 5,965,125,225.84/94,691.60
  6. Step 6: Final answer
    x = 62,995.29

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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.