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Finding the Fourth Proportional to 3,407.99, 5,112.10 and 942.83

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Solution

The fourth proportional to 3,407.99, 5,112.10 and 942.83 is: 1,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,407.99 : 5,112.10 = 942.83 : x
  2. Step 2: Convert to fraction form
    3,407.99/5,112.10 = 942.83/x
  3. Step 3: Cross multiply
    3,407.99x = 5,112.10 × 942.83
  4. Step 4: Simplify right side
    3,407.99x = 4,819,851.67
  5. Step 5: Solve for x
    x = 4,819,851.67/3,407.99
  6. Step 6: Final answer
    x = 1,414.28

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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.