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Finding the Fourth Proportional to 8,308.38, 12,381.58 and 8,068.49

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Solution

The fourth proportional to 8,308.38, 12,381.58 and 8,068.49 is: 12,024.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.38 : 12,381.58 = 8,068.49 : x
  2. Step 2: Convert to fraction form
    8,308.38/12,381.58 = 8,068.49/x
  3. Step 3: Cross multiply
    8,308.38x = 12,381.58 × 8,068.49
  4. Step 4: Simplify right side
    8,308.38x = 99,900,689.72
  5. Step 5: Solve for x
    x = 99,900,689.72/8,308.38
  6. Step 6: Final answer
    x = 12,024.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.