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Finding the Fourth Proportional to 8,759.78, 12,088.01 and 4,982.43

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Solution

The fourth proportional to 8,759.78, 12,088.01 and 4,982.43 is: 6,875.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,759.78 : 12,088.01 = 4,982.43 : x
  2. Step 2: Convert to fraction form
    8,759.78/12,088.01 = 4,982.43/x
  3. Step 3: Cross multiply
    8,759.78x = 12,088.01 × 4,982.43
  4. Step 4: Simplify right side
    8,759.78x = 60,227,638.75
  5. Step 5: Solve for x
    x = 60,227,638.75/8,759.78
  6. Step 6: Final answer
    x = 6,875.48

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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.