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Finding the Fourth Proportional to 18,191.28, 25,101.12 and 10,232.20

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Solution

The fourth proportional to 18,191.28, 25,101.12 and 10,232.20 is: 14,118.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.28 : 25,101.12 = 10,232.20 : x
  2. Step 2: Convert to fraction form
    18,191.28/25,101.12 = 10,232.20/x
  3. Step 3: Cross multiply
    18,191.28x = 25,101.12 × 10,232.20
  4. Step 4: Simplify right side
    18,191.28x = 256,839,680.06
  5. Step 5: Solve for x
    x = 256,839,680.06/18,191.28
  6. Step 6: Final answer
    x = 14,118.83

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Half scale
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Double scale
Find fourth proportional to 18,192.28, 25,102.50 and 10,233.20
Similar ratio
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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.