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Finding the Fourth Proportional to 96,280.55, 144,491.80 and 45,679.78

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Solution

The fourth proportional to 96,280.55, 144,491.80 and 45,679.78 is: 68,553.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,280.55 : 144,491.80 = 45,679.78 : x
  2. Step 2: Convert to fraction form
    96,280.55/144,491.80 = 45,679.78/x
  3. Step 3: Cross multiply
    96,280.55x = 144,491.80 × 45,679.78
  4. Step 4: Simplify right side
    96,280.55x = 6,600,353,635.80
  5. Step 5: Solve for x
    x = 6,600,353,635.80/96,280.55
  6. Step 6: Final answer
    x = 68,553.34

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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.