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Finding the Fourth Proportional to 2,356.38, 3,534.77 and 625

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Solution

The fourth proportional to 2,356.38, 3,534.77 and 625 is: 937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.38 : 3,534.77 = 625 : x
  2. Step 2: Convert to fraction form
    2,356.38/3,534.77 = 625/x
  3. Step 3: Cross multiply
    2,356.38x = 3,534.77 × 625
  4. Step 4: Simplify right side
    2,356.38x = 2,209,231.25
  5. Step 5: Solve for x
    x = 2,209,231.25/2,356.38
  6. Step 6: Final answer
    x = 937.55

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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.