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Finding the Fourth Proportional to 61,207.82, 91,787.16 and 19,074.05

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Solution

The fourth proportional to 61,207.82, 91,787.16 and 19,074.05 is: 28,603.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,207.82 : 91,787.16 = 19,074.05 : x
  2. Step 2: Convert to fraction form
    61,207.82/91,787.16 = 19,074.05/x
  3. Step 3: Cross multiply
    61,207.82x = 91,787.16 × 19,074.05
  4. Step 4: Simplify right side
    61,207.82x = 1,750,752,879.20
  5. Step 5: Solve for x
    x = 1,750,752,879.20/61,207.82
  6. Step 6: Final answer
    x = 28,603.42

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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.