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Finding the Fourth Proportional to 111,974.60, 167,616.30 and 65,088.20

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Solution

The fourth proportional to 111,974.60, 167,616.30 and 65,088.20 is: 97,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,974.60 : 167,616.30 = 65,088.20 : x
  2. Step 2: Convert to fraction form
    111,974.60/167,616.30 = 65,088.20/x
  3. Step 3: Cross multiply
    111,974.60x = 167,616.30 × 65,088.20
  4. Step 4: Simplify right side
    111,974.60x = 10,909,843,257.66
  5. Step 5: Solve for x
    x = 10,909,843,257.66/111,974.60
  6. Step 6: Final answer
    x = 97,431.41

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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.