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Finding the Fourth Proportional to 8,547.31, 12,787.24 and 6,473.31

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Solution

The fourth proportional to 8,547.31, 12,787.24 and 6,473.31 is: 9,684.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,547.31 : 12,787.24 = 6,473.31 : x
  2. Step 2: Convert to fraction form
    8,547.31/12,787.24 = 6,473.31/x
  3. Step 3: Cross multiply
    8,547.31x = 12,787.24 × 6,473.31
  4. Step 4: Simplify right side
    8,547.31x = 82,775,768.56
  5. Step 5: Solve for x
    x = 82,775,768.56/8,547.31
  6. Step 6: Final answer
    x = 9,684.42

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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.