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Finding the Fourth Proportional to 107,082.80, 160,624.20 and 75,978.80

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Solution

The fourth proportional to 107,082.80, 160,624.20 and 75,978.80 is: 113,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,082.80 : 160,624.20 = 75,978.80 : x
  2. Step 2: Convert to fraction form
    107,082.80/160,624.20 = 75,978.80/x
  3. Step 3: Cross multiply
    107,082.80x = 160,624.20 × 75,978.80
  4. Step 4: Simplify right side
    107,082.80x = 12,204,033,966.96
  5. Step 5: Solve for x
    x = 12,204,033,966.96/107,082.80
  6. Step 6: Final answer
    x = 113,968.20

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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.