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Finding the Fourth Proportional to 2,370.92, 3,557.96 and 831.92

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Solution

The fourth proportional to 2,370.92, 3,557.96 and 831.92 is: 1,248.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.92 : 3,557.96 = 831.92 : x
  2. Step 2: Convert to fraction form
    2,370.92/3,557.96 = 831.92/x
  3. Step 3: Cross multiply
    2,370.92x = 3,557.96 × 831.92
  4. Step 4: Simplify right side
    2,370.92x = 2,959,916.13
  5. Step 5: Solve for x
    x = 2,959,916.13/2,370.92
  6. Step 6: Final answer
    x = 1,248.43

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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.