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Finding the Fourth Proportional to 10,940.89, 15,098.40 and 5,972.89

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Solution

The fourth proportional to 10,940.89, 15,098.40 and 5,972.89 is: 8,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.89 : 15,098.40 = 5,972.89 : x
  2. Step 2: Convert to fraction form
    10,940.89/15,098.40 = 5,972.89/x
  3. Step 3: Cross multiply
    10,940.89x = 15,098.40 × 5,972.89
  4. Step 4: Simplify right side
    10,940.89x = 90,181,082.38
  5. Step 5: Solve for x
    x = 90,181,082.38/10,940.89
  6. Step 6: Final answer
    x = 8,242.57

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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.