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Finding the Fourth Proportional to 18,562.95, 25,616.90 and 10,065.12

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Solution

The fourth proportional to 18,562.95, 25,616.90 and 10,065.12 is: 13,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562.95 : 25,616.90 = 10,065.12 : x
  2. Step 2: Convert to fraction form
    18,562.95/25,616.90 = 10,065.12/x
  3. Step 3: Cross multiply
    18,562.95x = 25,616.90 × 10,065.12
  4. Step 4: Simplify right side
    18,562.95x = 257,837,122.20
  5. Step 5: Solve for x
    x = 257,837,122.20/18,562.95
  6. Step 6: Final answer
    x = 13,889.88

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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.