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Finding the Fourth Proportional to 80,593.60, 120,890.40 and 59,857.60

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Solution

The fourth proportional to 80,593.60, 120,890.40 and 59,857.60 is: 89,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,593.60 : 120,890.40 = 59,857.60 : x
  2. Step 2: Convert to fraction form
    80,593.60/120,890.40 = 59,857.60/x
  3. Step 3: Cross multiply
    80,593.60x = 120,890.40 × 59,857.60
  4. Step 4: Simplify right side
    80,593.60x = 7,236,209,207.04
  5. Step 5: Solve for x
    x = 7,236,209,207.04/80,593.60
  6. Step 6: Final answer
    x = 89,786.40

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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.