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Finding the Fourth Proportional to 2,326.52, 3,490.20 and 766.61

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Solution

The fourth proportional to 2,326.52, 3,490.20 and 766.61 is: 1,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,326.52 : 3,490.20 = 766.61 : x
  2. Step 2: Convert to fraction form
    2,326.52/3,490.20 = 766.61/x
  3. Step 3: Cross multiply
    2,326.52x = 3,490.20 × 766.61
  4. Step 4: Simplify right side
    2,326.52x = 2,675,622.22
  5. Step 5: Solve for x
    x = 2,675,622.22/2,326.52
  6. Step 6: Final answer
    x = 1,150.05

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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.