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Finding the Fourth Proportional to 1,456.97, 2,184.30 and 726.17

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Solution

The fourth proportional to 1,456.97, 2,184.30 and 726.17 is: 1,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.97 : 2,184.30 = 726.17 : x
  2. Step 2: Convert to fraction form
    1,456.97/2,184.30 = 726.17/x
  3. Step 3: Cross multiply
    1,456.97x = 2,184.30 × 726.17
  4. Step 4: Simplify right side
    1,456.97x = 1,586,162.21
  5. Step 5: Solve for x
    x = 1,586,162.21/1,456.97
  6. Step 6: Final answer
    x = 1,088.68

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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.