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Finding the Fourth Proportional to 2,347.61, 3,521.92 and 961.08

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Solution

The fourth proportional to 2,347.61, 3,521.92 and 961.08 is: 1,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.61 : 3,521.92 = 961.08 : x
  2. Step 2: Convert to fraction form
    2,347.61/3,521.92 = 961.08/x
  3. Step 3: Cross multiply
    2,347.61x = 3,521.92 × 961.08
  4. Step 4: Simplify right side
    2,347.61x = 3,384,865.04
  5. Step 5: Solve for x
    x = 3,384,865.04/2,347.61
  6. Step 6: Final answer
    x = 1,441.84

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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.