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Finding the Fourth Proportional to 18,574.24, 25,631.12 and 10,616.80

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Solution

The fourth proportional to 18,574.24, 25,631.12 and 10,616.80 is: 14,650.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.24 : 25,631.12 = 10,616.80 : x
  2. Step 2: Convert to fraction form
    18,574.24/25,631.12 = 10,616.80/x
  3. Step 3: Cross multiply
    18,574.24x = 25,631.12 × 10,616.80
  4. Step 4: Simplify right side
    18,574.24x = 272,120,474.82
  5. Step 5: Solve for x
    x = 272,120,474.82/18,574.24
  6. Step 6: Final answer
    x = 14,650.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.