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Finding the Fourth Proportional to 111,766.61, 154,231.68 and 64,023.03

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Solution

The fourth proportional to 111,766.61, 154,231.68 and 64,023.03 is: 88,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,766.61 : 154,231.68 = 64,023.03 : x
  2. Step 2: Convert to fraction form
    111,766.61/154,231.68 = 64,023.03/x
  3. Step 3: Cross multiply
    111,766.61x = 154,231.68 × 64,023.03
  4. Step 4: Simplify right side
    111,766.61x = 9,874,379,475.59
  5. Step 5: Solve for x
    x = 9,874,379,475.59/111,766.61
  6. Step 6: Final answer
    x = 88,348.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.