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Finding the Fourth Proportional to 2,474.23, 3,711.34 and 831.93

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Solution

The fourth proportional to 2,474.23, 3,711.34 and 831.93 is: 1,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,474.23 : 3,711.34 = 831.93 : x
  2. Step 2: Convert to fraction form
    2,474.23/3,711.34 = 831.93/x
  3. Step 3: Cross multiply
    2,474.23x = 3,711.34 × 831.93
  4. Step 4: Simplify right side
    2,474.23x = 3,087,572.37
  5. Step 5: Solve for x
    x = 3,087,572.37/2,474.23
  6. Step 6: Final answer
    x = 1,247.89

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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.