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Finding the Fourth Proportional to 66,467.20, 99,700.80 and 62,060.80

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Solution

The fourth proportional to 66,467.20, 99,700.80 and 62,060.80 is: 93,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.20 : 99,700.80 = 62,060.80 : x
  2. Step 2: Convert to fraction form
    66,467.20/99,700.80 = 62,060.80/x
  3. Step 3: Cross multiply
    66,467.20x = 99,700.80 × 62,060.80
  4. Step 4: Simplify right side
    66,467.20x = 6,187,511,408.64
  5. Step 5: Solve for x
    x = 6,187,511,408.64/66,467.20
  6. Step 6: Final answer
    x = 93,091.20

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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.