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Finding the Fourth Proportional to 91,445.49, 126,237.92 and 68,793.11

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Solution

The fourth proportional to 91,445.49, 126,237.92 and 68,793.11 is: 94,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,445.49 : 126,237.92 = 68,793.11 : x
  2. Step 2: Convert to fraction form
    91,445.49/126,237.92 = 68,793.11/x
  3. Step 3: Cross multiply
    91,445.49x = 126,237.92 × 68,793.11
  4. Step 4: Simplify right side
    91,445.49x = 8,684,298,453.40
  5. Step 5: Solve for x
    x = 8,684,298,453.40/91,445.49
  6. Step 6: Final answer
    x = 94,966.94

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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.