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Finding the Fourth Proportional to 18,616.14, 25,695.90 and 11,063.70

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Solution

The fourth proportional to 18,616.14, 25,695.90 and 11,063.70 is: 15,271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.14 : 25,695.90 = 11,063.70 : x
  2. Step 2: Convert to fraction form
    18,616.14/25,695.90 = 11,063.70/x
  3. Step 3: Cross multiply
    18,616.14x = 25,695.90 × 11,063.70
  4. Step 4: Simplify right side
    18,616.14x = 284,291,728.83
  5. Step 5: Solve for x
    x = 284,291,728.83/18,616.14
  6. Step 6: Final answer
    x = 15,271.25

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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.