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Finding the Fourth Proportional to 18,195.84, 25,110.72 and 11,126.16

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Solution

The fourth proportional to 18,195.84, 25,110.72 and 11,126.16 is: 15,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195.84 : 25,110.72 = 11,126.16 : x
  2. Step 2: Convert to fraction form
    18,195.84/25,110.72 = 11,126.16/x
  3. Step 3: Cross multiply
    18,195.84x = 25,110.72 × 11,126.16
  4. Step 4: Simplify right side
    18,195.84x = 279,385,888.44
  5. Step 5: Solve for x
    x = 279,385,888.44/18,195.84
  6. Step 6: Final answer
    x = 15,354.38

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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.