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Finding the Fourth Proportional to 8,545.95, 12,820.78 and 2,622.86

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Solution

The fourth proportional to 8,545.95, 12,820.78 and 2,622.86 is: 3,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.95 : 12,820.78 = 2,622.86 : x
  2. Step 2: Convert to fraction form
    8,545.95/12,820.78 = 2,622.86/x
  3. Step 3: Cross multiply
    8,545.95x = 12,820.78 × 2,622.86
  4. Step 4: Simplify right side
    8,545.95x = 33,627,111.03
  5. Step 5: Solve for x
    x = 33,627,111.03/8,545.95
  6. Step 6: Final answer
    x = 3,934.86

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.