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Finding the Fourth Proportional to 72,488.40, 108,744.75 and 22,556.76

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Solution

The fourth proportional to 72,488.40, 108,744.75 and 22,556.76 is: 33,838.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,488.40 : 108,744.75 = 22,556.76 : x
  2. Step 2: Convert to fraction form
    72,488.40/108,744.75 = 22,556.76/x
  3. Step 3: Cross multiply
    72,488.40x = 108,744.75 × 22,556.76
  4. Step 4: Simplify right side
    72,488.40x = 2,452,929,227.01
  5. Step 5: Solve for x
    x = 2,452,929,227.01/72,488.40
  6. Step 6: Final answer
    x = 33,838.92

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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.