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Finding the Fourth Proportional to 2,349.20, 3,523.56 and 617.84

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Solution

The fourth proportional to 2,349.20, 3,523.56 and 617.84 is: 926.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,349.20 : 3,523.56 = 617.84 : x
  2. Step 2: Convert to fraction form
    2,349.20/3,523.56 = 617.84/x
  3. Step 3: Cross multiply
    2,349.20x = 3,523.56 × 617.84
  4. Step 4: Simplify right side
    2,349.20x = 2,176,996.31
  5. Step 5: Solve for x
    x = 2,176,996.31/2,349.20
  6. Step 6: Final answer
    x = 926.70

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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.