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Finding the Fourth Proportional to 79,281.54, 118,839.06 and 26,672.76

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Solution

The fourth proportional to 79,281.54, 118,839.06 and 26,672.76 is: 39,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,281.54 : 118,839.06 = 26,672.76 : x
  2. Step 2: Convert to fraction form
    79,281.54/118,839.06 = 26,672.76/x
  3. Step 3: Cross multiply
    79,281.54x = 118,839.06 × 26,672.76
  4. Step 4: Simplify right side
    79,281.54x = 3,169,765,726.01
  5. Step 5: Solve for x
    x = 3,169,765,726.01/79,281.54
  6. Step 6: Final answer
    x = 39,981.13

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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.