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Finding the Fourth Proportional to 12,753.92, 19,127.16 and 4,960.88

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Solution

The fourth proportional to 12,753.92, 19,127.16 and 4,960.88 is: 7,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.92 : 19,127.16 = 4,960.88 : x
  2. Step 2: Convert to fraction form
    12,753.92/19,127.16 = 4,960.88/x
  3. Step 3: Cross multiply
    12,753.92x = 19,127.16 × 4,960.88
  4. Step 4: Simplify right side
    12,753.92x = 94,887,545.50
  5. Step 5: Solve for x
    x = 94,887,545.50/12,753.92
  6. Step 6: Final answer
    x = 7,439.87

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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.