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Finding the Fourth Proportional to 99,492.90, 137,255.83 and 67,217.14

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Solution

The fourth proportional to 99,492.90, 137,255.83 and 67,217.14 is: 92,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,492.90 : 137,255.83 = 67,217.14 : x
  2. Step 2: Convert to fraction form
    99,492.90/137,255.83 = 67,217.14/x
  3. Step 3: Cross multiply
    99,492.90x = 137,255.83 × 67,217.14
  4. Step 4: Simplify right side
    99,492.90x = 9,225,944,340.93
  5. Step 5: Solve for x
    x = 9,225,944,340.93/99,492.90
  6. Step 6: Final answer
    x = 92,729.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.