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Finding the Fourth Proportional to 10,274.50, 15,412.97 and 3,349

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Solution

The fourth proportional to 10,274.50, 15,412.97 and 3,349 is: 5,023.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,274.50 : 15,412.97 = 3,349 : x
  2. Step 2: Convert to fraction form
    10,274.50/15,412.97 = 3,349/x
  3. Step 3: Cross multiply
    10,274.50x = 15,412.97 × 3,349
  4. Step 4: Simplify right side
    10,274.50x = 51,618,036.53
  5. Step 5: Solve for x
    x = 51,618,036.53/10,274.50
  6. Step 6: Final answer
    x = 5,023.90

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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.