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Finding the Fourth Proportional to 12,959.92, 19,425.12 and 5,560.56

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Solution

The fourth proportional to 12,959.92, 19,425.12 and 5,560.56 is: 8,334.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.92 : 19,425.12 = 5,560.56 : x
  2. Step 2: Convert to fraction form
    12,959.92/19,425.12 = 5,560.56/x
  3. Step 3: Cross multiply
    12,959.92x = 19,425.12 × 5,560.56
  4. Step 4: Simplify right side
    12,959.92x = 108,014,545.27
  5. Step 5: Solve for x
    x = 108,014,545.27/12,959.92
  6. Step 6: Final answer
    x = 8,334.51

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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.