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Finding the Fourth Proportional to 18,126.75, 25,019.25 and 11,059.11

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Solution

The fourth proportional to 18,126.75, 25,019.25 and 11,059.11 is: 15,264.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,126.75 : 25,019.25 = 11,059.11 : x
  2. Step 2: Convert to fraction form
    18,126.75/25,019.25 = 11,059.11/x
  3. Step 3: Cross multiply
    18,126.75x = 25,019.25 × 11,059.11
  4. Step 4: Simplify right side
    18,126.75x = 276,690,637.87
  5. Step 5: Solve for x
    x = 276,690,637.87/18,126.75
  6. Step 6: Final answer
    x = 15,264.22

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Half scale
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Double scale
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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.