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Finding the Fourth Proportional to 111,936.10, 167,904.15 and 86,566.90

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Solution

The fourth proportional to 111,936.10, 167,904.15 and 86,566.90 is: 129,850.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,936.10 : 167,904.15 = 86,566.90 : x
  2. Step 2: Convert to fraction form
    111,936.10/167,904.15 = 86,566.90/x
  3. Step 3: Cross multiply
    111,936.10x = 167,904.15 × 86,566.90
  4. Step 4: Simplify right side
    111,936.10x = 14,534,941,762.64
  5. Step 5: Solve for x
    x = 14,534,941,762.64/111,936.10
  6. Step 6: Final answer
    x = 129,850.35

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.