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Finding the Fourth Proportional to 72,404.70, 108,615.15 and 22,484.40

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Solution

The fourth proportional to 72,404.70, 108,615.15 and 22,484.40 is: 33,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,404.70 : 108,615.15 = 22,484.40 : x
  2. Step 2: Convert to fraction form
    72,404.70/108,615.15 = 22,484.40/x
  3. Step 3: Cross multiply
    72,404.70x = 108,615.15 × 22,484.40
  4. Step 4: Simplify right side
    72,404.70x = 2,442,146,478.66
  5. Step 5: Solve for x
    x = 2,442,146,478.66/72,404.70
  6. Step 6: Final answer
    x = 33,729.12

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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.