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Finding the Fourth Proportional to 18,188.95, 25,100.49 and 10,231.17

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Solution

The fourth proportional to 18,188.95, 25,100.49 and 10,231.17 is: 14,118.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.95 : 25,100.49 = 10,231.17 : x
  2. Step 2: Convert to fraction form
    18,188.95/25,100.49 = 10,231.17/x
  3. Step 3: Cross multiply
    18,188.95x = 25,100.49 × 10,231.17
  4. Step 4: Simplify right side
    18,188.95x = 256,807,341.91
  5. Step 5: Solve for x
    x = 256,807,341.91/18,188.95
  6. Step 6: Final answer
    x = 14,118.87

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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.