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Finding the Fourth Proportional to 69,309.80, 103,964.70 and 62,052.20

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Solution

The fourth proportional to 69,309.80, 103,964.70 and 62,052.20 is: 93,078.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,309.80 : 103,964.70 = 62,052.20 : x
  2. Step 2: Convert to fraction form
    69,309.80/103,964.70 = 62,052.20/x
  3. Step 3: Cross multiply
    69,309.80x = 103,964.70 × 62,052.20
  4. Step 4: Simplify right side
    69,309.80x = 6,451,238,357.34
  5. Step 5: Solve for x
    x = 6,451,238,357.34/69,309.80
  6. Step 6: Final answer
    x = 93,078.30

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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.