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Finding the Fourth Proportional to 220,131.55, 330,113.49 and 93,691.99

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Solution

The fourth proportional to 220,131.55, 330,113.49 and 93,691.99 is: 140,502.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,131.55 : 330,113.49 = 93,691.99 : x
  2. Step 2: Convert to fraction form
    220,131.55/330,113.49 = 93,691.99/x
  3. Step 3: Cross multiply
    220,131.55x = 330,113.49 × 93,691.99
  4. Step 4: Simplify right side
    220,131.55x = 30,928,989,803.95
  5. Step 5: Solve for x
    x = 30,928,989,803.95/220,131.55
  6. Step 6: Final answer
    x = 140,502.30

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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.