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Finding the Fourth Proportional to 66,466.20, 99,699.30 and 63,841.80

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Solution

The fourth proportional to 66,466.20, 99,699.30 and 63,841.80 is: 95,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.20 : 99,699.30 = 63,841.80 : x
  2. Step 2: Convert to fraction form
    66,466.20/99,699.30 = 63,841.80/x
  3. Step 3: Cross multiply
    66,466.20x = 99,699.30 × 63,841.80
  4. Step 4: Simplify right side
    66,466.20x = 6,364,982,770.74
  5. Step 5: Solve for x
    x = 6,364,982,770.74/66,466.20
  6. Step 6: Final answer
    x = 95,762.70

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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.