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Finding the Fourth Proportional to 21,909.87, 32,840.13 and 10,793.01

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Solution

The fourth proportional to 21,909.87, 32,840.13 and 10,793.01 is: 16,177.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.87 : 32,840.13 = 10,793.01 : x
  2. Step 2: Convert to fraction form
    21,909.87/32,840.13 = 10,793.01/x
  3. Step 3: Cross multiply
    21,909.87x = 32,840.13 × 10,793.01
  4. Step 4: Simplify right side
    21,909.87x = 354,443,851.49
  5. Step 5: Solve for x
    x = 354,443,851.49/21,909.87
  6. Step 6: Final answer
    x = 16,177.36

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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.