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Finding the Fourth Proportional to 18,524.50, 25,570.29 and 11,072.50

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Solution

The fourth proportional to 18,524.50, 25,570.29 and 11,072.50 is: 15,283.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,524.50 : 25,570.29 = 11,072.50 : x
  2. Step 2: Convert to fraction form
    18,524.50/25,570.29 = 11,072.50/x
  3. Step 3: Cross multiply
    18,524.50x = 25,570.29 × 11,072.50
  4. Step 4: Simplify right side
    18,524.50x = 283,127,036.03
  5. Step 5: Solve for x
    x = 283,127,036.03/18,524.50
  6. Step 6: Final answer
    x = 15,283.92

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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.