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Finding the Fourth Proportional to 58,100.82, 87,122.46 and 20,655.29

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Solution

The fourth proportional to 58,100.82, 87,122.46 and 20,655.29 is: 30,972.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,100.82 : 87,122.46 = 20,655.29 : x
  2. Step 2: Convert to fraction form
    58,100.82/87,122.46 = 20,655.29/x
  3. Step 3: Cross multiply
    58,100.82x = 87,122.46 × 20,655.29
  4. Step 4: Simplify right side
    58,100.82x = 1,799,539,241.20
  5. Step 5: Solve for x
    x = 1,799,539,241.20/58,100.82
  6. Step 6: Final answer
    x = 30,972.70

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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.