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Finding the Fourth Proportional to 92,476.20, 138,720.45 and 25,918.95

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Solution

The fourth proportional to 92,476.20, 138,720.45 and 25,918.95 is: 38,880.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,476.20 : 138,720.45 = 25,918.95 : x
  2. Step 2: Convert to fraction form
    92,476.20/138,720.45 = 25,918.95/x
  3. Step 3: Cross multiply
    92,476.20x = 138,720.45 × 25,918.95
  4. Step 4: Simplify right side
    92,476.20x = 3,595,488,407.53
  5. Step 5: Solve for x
    x = 3,595,488,407.53/92,476.20
  6. Step 6: Final answer
    x = 38,880.15

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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.