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Finding the Fourth Proportional to 85,153.60, 127,651.68 and 43,508.80

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Solution

The fourth proportional to 85,153.60, 127,651.68 and 43,508.80 is: 65,222.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,153.60 : 127,651.68 = 43,508.80 : x
  2. Step 2: Convert to fraction form
    85,153.60/127,651.68 = 43,508.80/x
  3. Step 3: Cross multiply
    85,153.60x = 127,651.68 × 43,508.80
  4. Step 4: Simplify right side
    85,153.60x = 5,553,971,414.78
  5. Step 5: Solve for x
    x = 5,553,971,414.78/85,153.60
  6. Step 6: Final answer
    x = 65,222.98

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1.5x scale

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.