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Finding the Fourth Proportional to 29,294.88, 43,948.80 and 8,520

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Solution

The fourth proportional to 29,294.88, 43,948.80 and 8,520 is: 12,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,294.88 : 43,948.80 = 8,520 : x
  2. Step 2: Convert to fraction form
    29,294.88/43,948.80 = 8,520/x
  3. Step 3: Cross multiply
    29,294.88x = 43,948.80 × 8,520
  4. Step 4: Simplify right side
    29,294.88x = 374,443,776
  5. Step 5: Solve for x
    x = 374,443,776/29,294.88
  6. Step 6: Final answer
    x = 12,781.88

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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.