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Finding the Fourth Proportional to 66,432.67, 91,702.68 and 48,668.77

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Solution

The fourth proportional to 66,432.67, 91,702.68 and 48,668.77 is: 67,181.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432.67 : 91,702.68 = 48,668.77 : x
  2. Step 2: Convert to fraction form
    66,432.67/91,702.68 = 48,668.77/x
  3. Step 3: Cross multiply
    66,432.67x = 91,702.68 × 48,668.77
  4. Step 4: Simplify right side
    66,432.67x = 4,463,056,641.30
  5. Step 5: Solve for x
    x = 4,463,056,641.30/66,432.67
  6. Step 6: Final answer
    x = 67,181.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.