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Finding the Fourth Proportional to 67,748.40, 101,428.20 and 59,972.40

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Solution

The fourth proportional to 67,748.40, 101,428.20 and 59,972.40 is: 89,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,748.40 : 101,428.20 = 59,972.40 : x
  2. Step 2: Convert to fraction form
    67,748.40/101,428.20 = 59,972.40/x
  3. Step 3: Cross multiply
    67,748.40x = 101,428.20 × 59,972.40
  4. Step 4: Simplify right side
    67,748.40x = 6,082,892,581.68
  5. Step 5: Solve for x
    x = 6,082,892,581.68/67,748.40
  6. Step 6: Final answer
    x = 89,786.51

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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.