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Finding the Fourth Proportional to 111,676.87, 154,177.70 and 73,547.21

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Solution

The fourth proportional to 111,676.87, 154,177.70 and 73,547.21 is: 101,537.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,676.87 : 154,177.70 = 73,547.21 : x
  2. Step 2: Convert to fraction form
    111,676.87/154,177.70 = 73,547.21/x
  3. Step 3: Cross multiply
    111,676.87x = 154,177.70 × 73,547.21
  4. Step 4: Simplify right side
    111,676.87x = 11,339,339,092.20
  5. Step 5: Solve for x
    x = 11,339,339,092.20/111,676.87
  6. Step 6: Final answer
    x = 101,537.04

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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.