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Finding the Fourth Proportional to 111,685.90, 167,549.60 and 36,811.30

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Solution

The fourth proportional to 111,685.90, 167,549.60 and 36,811.30 is: 55,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,685.90 : 167,549.60 = 36,811.30 : x
  2. Step 2: Convert to fraction form
    111,685.90/167,549.60 = 36,811.30/x
  3. Step 3: Cross multiply
    111,685.90x = 167,549.60 × 36,811.30
  4. Step 4: Simplify right side
    111,685.90x = 6,167,718,963.34
  5. Step 5: Solve for x
    x = 6,167,718,963.34/111,685.90
  6. Step 6: Final answer
    x = 55,223.79

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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.