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Finding the Fourth Proportional to 8,847.21, 12,208.85 and 4,867.95

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Solution

The fourth proportional to 8,847.21, 12,208.85 and 4,867.95 is: 6,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847.21 : 12,208.85 = 4,867.95 : x
  2. Step 2: Convert to fraction form
    8,847.21/12,208.85 = 4,867.95/x
  3. Step 3: Cross multiply
    8,847.21x = 12,208.85 × 4,867.95
  4. Step 4: Simplify right side
    8,847.21x = 59,432,047.02
  5. Step 5: Solve for x
    x = 59,432,047.02/8,847.21
  6. Step 6: Final answer
    x = 6,717.60

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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.