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Finding the Fourth Proportional to 717, 1,075.92 and 332.28

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Solution

The fourth proportional to 717, 1,075.92 and 332.28 is: 498.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    717 : 1,075.92 = 332.28 : x
  2. Step 2: Convert to fraction form
    717/1,075.92 = 332.28/x
  3. Step 3: Cross multiply
    717x = 1,075.92 × 332.28
  4. Step 4: Simplify right side
    717x = 357,506.70
  5. Step 5: Solve for x
    x = 357,506.70/717
  6. Step 6: Final answer
    x = 498.61

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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.