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Finding the Fourth Proportional to 758.25, 1,132.99 and 602.55

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Solution

The fourth proportional to 758.25, 1,132.99 and 602.55 is: 900.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.25 : 1,132.99 = 602.55 : x
  2. Step 2: Convert to fraction form
    758.25/1,132.99 = 602.55/x
  3. Step 3: Cross multiply
    758.25x = 1,132.99 × 602.55
  4. Step 4: Simplify right side
    758.25x = 682,681.62
  5. Step 5: Solve for x
    x = 682,681.62/758.25
  6. Step 6: Final answer
    x = 900.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.