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Finding the Fourth Proportional to 18,884.56, 26,061.24 and 10,929.28

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Solution

The fourth proportional to 18,884.56, 26,061.24 and 10,929.28 is: 15,082.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.56 : 26,061.24 = 10,929.28 : x
  2. Step 2: Convert to fraction form
    18,884.56/26,061.24 = 10,929.28/x
  3. Step 3: Cross multiply
    18,884.56x = 26,061.24 × 10,929.28
  4. Step 4: Simplify right side
    18,884.56x = 284,830,589.11
  5. Step 5: Solve for x
    x = 284,830,589.11/18,884.56
  6. Step 6: Final answer
    x = 15,082.72

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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.