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Finding the Fourth Proportional to 29,805.38, 44,747.16 and 19,988.60

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Solution

The fourth proportional to 29,805.38, 44,747.16 and 19,988.60 is: 30,009.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,805.38 : 44,747.16 = 19,988.60 : x
  2. Step 2: Convert to fraction form
    29,805.38/44,747.16 = 19,988.60/x
  3. Step 3: Cross multiply
    29,805.38x = 44,747.16 × 19,988.60
  4. Step 4: Simplify right side
    29,805.38x = 894,433,082.38
  5. Step 5: Solve for x
    x = 894,433,082.38/29,805.38
  6. Step 6: Final answer
    x = 30,009.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.