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Finding the Fourth Proportional to 69,082.20, 103,623.30 and 67,546.20

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Solution

The fourth proportional to 69,082.20, 103,623.30 and 67,546.20 is: 101,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,082.20 : 103,623.30 = 67,546.20 : x
  2. Step 2: Convert to fraction form
    69,082.20/103,623.30 = 67,546.20/x
  3. Step 3: Cross multiply
    69,082.20x = 103,623.30 × 67,546.20
  4. Step 4: Simplify right side
    69,082.20x = 6,999,360,146.46
  5. Step 5: Solve for x
    x = 6,999,360,146.46/69,082.20
  6. Step 6: Final answer
    x = 101,319.30

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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.