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Finding the Fourth Proportional to 123,878.72, 185,805.42 and 33,929.44

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Solution

The fourth proportional to 123,878.72, 185,805.42 and 33,929.44 is: 50,890.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,878.72 : 185,805.42 = 33,929.44 : x
  2. Step 2: Convert to fraction form
    123,878.72/185,805.42 = 33,929.44/x
  3. Step 3: Cross multiply
    123,878.72x = 185,805.42 × 33,929.44
  4. Step 4: Simplify right side
    123,878.72x = 6,304,273,849.56
  5. Step 5: Solve for x
    x = 6,304,273,849.56/123,878.72
  6. Step 6: Final answer
    x = 50,890.69

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1.5x scale

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.