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Finding the Fourth Proportional to 8,363.76, 12,547.80 and 3,169.68

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Solution

The fourth proportional to 8,363.76, 12,547.80 and 3,169.68 is: 4,755.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.76 : 12,547.80 = 3,169.68 : x
  2. Step 2: Convert to fraction form
    8,363.76/12,547.80 = 3,169.68/x
  3. Step 3: Cross multiply
    8,363.76x = 12,547.80 × 3,169.68
  4. Step 4: Simplify right side
    8,363.76x = 39,772,510.70
  5. Step 5: Solve for x
    x = 39,772,510.70/8,363.76
  6. Step 6: Final answer
    x = 4,755.34

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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.