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Finding the Fourth Proportional to 111,941.34, 167,806.45 and 55,728.28

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Solution

The fourth proportional to 111,941.34, 167,806.45 and 55,728.28 is: 83,539.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,941.34 : 167,806.45 = 55,728.28 : x
  2. Step 2: Convert to fraction form
    111,941.34/167,806.45 = 55,728.28/x
  3. Step 3: Cross multiply
    111,941.34x = 167,806.45 × 55,728.28
  4. Step 4: Simplify right side
    111,941.34x = 9,351,564,831.41
  5. Step 5: Solve for x
    x = 9,351,564,831.41/111,941.34
  6. Step 6: Final answer
    x = 83,539.87

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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.