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Finding the Fourth Proportional to 69,604.80, 104,407.20 and 34,612.80

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Solution

The fourth proportional to 69,604.80, 104,407.20 and 34,612.80 is: 51,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,604.80 : 104,407.20 = 34,612.80 : x
  2. Step 2: Convert to fraction form
    69,604.80/104,407.20 = 34,612.80/x
  3. Step 3: Cross multiply
    69,604.80x = 104,407.20 × 34,612.80
  4. Step 4: Simplify right side
    69,604.80x = 3,613,825,532.16
  5. Step 5: Solve for x
    x = 3,613,825,532.16/69,604.80
  6. Step 6: Final answer
    x = 51,919.20

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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.