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Finding the Fourth Proportional to 111,881.52, 167,779.80 and 36,979.20

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Solution

The fourth proportional to 111,881.52, 167,779.80 and 36,979.20 is: 55,454.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,881.52 : 167,779.80 = 36,979.20 : x
  2. Step 2: Convert to fraction form
    111,881.52/167,779.80 = 36,979.20/x
  3. Step 3: Cross multiply
    111,881.52x = 167,779.80 × 36,979.20
  4. Step 4: Simplify right side
    111,881.52x = 6,204,362,780.16
  5. Step 5: Solve for x
    x = 6,204,362,780.16/111,881.52
  6. Step 6: Final answer
    x = 55,454.76

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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.