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Finding the Fourth Proportional to 1,332.29, 1,995.10 and 716.18

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Solution

The fourth proportional to 1,332.29, 1,995.10 and 716.18 is: 1,072.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.29 : 1,995.10 = 716.18 : x
  2. Step 2: Convert to fraction form
    1,332.29/1,995.10 = 716.18/x
  3. Step 3: Cross multiply
    1,332.29x = 1,995.10 × 716.18
  4. Step 4: Simplify right side
    1,332.29x = 1,428,838.95
  5. Step 5: Solve for x
    x = 1,428,838.95/1,332.29
  6. Step 6: Final answer
    x = 1,072.47

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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.