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Finding the Fourth Proportional to 80,674.40, 111,301.34 and 48,831.68

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Solution

The fourth proportional to 80,674.40, 111,301.34 and 48,831.68 is: 67,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,674.40 : 111,301.34 = 48,831.68 : x
  2. Step 2: Convert to fraction form
    80,674.40/111,301.34 = 48,831.68/x
  3. Step 3: Cross multiply
    80,674.40x = 111,301.34 × 48,831.68
  4. Step 4: Simplify right side
    80,674.40x = 5,435,031,418.45
  5. Step 5: Solve for x
    x = 5,435,031,418.45/80,674.40
  6. Step 6: Final answer
    x = 67,369.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.