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Finding the Fourth Proportional to 3,255.47, 4,883.20 and 790.29

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Solution

The fourth proportional to 3,255.47, 4,883.20 and 790.29 is: 1,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.47 : 4,883.20 = 790.29 : x
  2. Step 2: Convert to fraction form
    3,255.47/4,883.20 = 790.29/x
  3. Step 3: Cross multiply
    3,255.47x = 4,883.20 × 790.29
  4. Step 4: Simplify right side
    3,255.47x = 3,859,123.84
  5. Step 5: Solve for x
    x = 3,859,123.84/3,255.47
  6. Step 6: Final answer
    x = 1,185.43

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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.