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Finding the Fourth Proportional to 111,647.53, 167,097.06 and 91,655.92

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Solution

The fourth proportional to 111,647.53, 167,097.06 and 91,655.92 is: 137,176.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,647.53 : 167,097.06 = 91,655.92 : x
  2. Step 2: Convert to fraction form
    111,647.53/167,097.06 = 91,655.92/x
  3. Step 3: Cross multiply
    111,647.53x = 167,097.06 × 91,655.92
  4. Step 4: Simplify right side
    111,647.53x = 15,315,434,763.60
  5. Step 5: Solve for x
    x = 15,315,434,763.60/111,647.53
  6. Step 6: Final answer
    x = 137,176.66

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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.