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Finding the Fourth Proportional to 3,092.31, 4,638.45 and 752.30

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Solution

The fourth proportional to 3,092.31, 4,638.45 and 752.30 is: 1,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,092.31 : 4,638.45 = 752.30 : x
  2. Step 2: Convert to fraction form
    3,092.31/4,638.45 = 752.30/x
  3. Step 3: Cross multiply
    3,092.31x = 4,638.45 × 752.30
  4. Step 4: Simplify right side
    3,092.31x = 3,489,482.74
  5. Step 5: Solve for x
    x = 3,489,482.74/3,092.31
  6. Step 6: Final answer
    x = 1,128.44

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Similar ratio
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1.5x scale

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.