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Finding the Fourth Proportional to 96,635.88, 144,765.18 and 66,579.21

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Solution

The fourth proportional to 96,635.88, 144,765.18 and 66,579.21 is: 99,738.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,635.88 : 144,765.18 = 66,579.21 : x
  2. Step 2: Convert to fraction form
    96,635.88/144,765.18 = 66,579.21/x
  3. Step 3: Cross multiply
    96,635.88x = 144,765.18 × 66,579.21
  4. Step 4: Simplify right side
    96,635.88x = 9,638,351,319.91
  5. Step 5: Solve for x
    x = 9,638,351,319.91/96,635.88
  6. Step 6: Final answer
    x = 99,738.85

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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.