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Finding the Fourth Proportional to 83,651.90, 125,367.10 and 61,360.90

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Solution

The fourth proportional to 83,651.90, 125,367.10 and 61,360.90 is: 91,960.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.90 : 125,367.10 = 61,360.90 : x
  2. Step 2: Convert to fraction form
    83,651.90/125,367.10 = 61,360.90/x
  3. Step 3: Cross multiply
    83,651.90x = 125,367.10 × 61,360.90
  4. Step 4: Simplify right side
    83,651.90x = 7,692,638,086.39
  5. Step 5: Solve for x
    x = 7,692,638,086.39/83,651.90
  6. Step 6: Final answer
    x = 91,960.11

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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.