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Finding the Fourth Proportional to 8,562.79, 12,844.05 and 2,719.33

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Solution

The fourth proportional to 8,562.79, 12,844.05 and 2,719.33 is: 4,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.79 : 12,844.05 = 2,719.33 : x
  2. Step 2: Convert to fraction form
    8,562.79/12,844.05 = 2,719.33/x
  3. Step 3: Cross multiply
    8,562.79x = 12,844.05 × 2,719.33
  4. Step 4: Simplify right side
    8,562.79x = 34,927,210.49
  5. Step 5: Solve for x
    x = 34,927,210.49/8,562.79
  6. Step 6: Final answer
    x = 4,078.95

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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.