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Finding the Fourth Proportional to 1,474.62, 2,211.77 and 925.17

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Solution

The fourth proportional to 1,474.62, 2,211.77 and 925.17 is: 1,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.62 : 2,211.77 = 925.17 : x
  2. Step 2: Convert to fraction form
    1,474.62/2,211.77 = 925.17/x
  3. Step 3: Cross multiply
    1,474.62x = 2,211.77 × 925.17
  4. Step 4: Simplify right side
    1,474.62x = 2,046,252.07
  5. Step 5: Solve for x
    x = 2,046,252.07/1,474.62
  6. Step 6: Final answer
    x = 1,387.65

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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.