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Finding the Fourth Proportional to 21,859.44, 32,789.12 and 6,277.04

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Solution

The fourth proportional to 21,859.44, 32,789.12 and 6,277.04 is: 9,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.44 : 32,789.12 = 6,277.04 : x
  2. Step 2: Convert to fraction form
    21,859.44/32,789.12 = 6,277.04/x
  3. Step 3: Cross multiply
    21,859.44x = 32,789.12 × 6,277.04
  4. Step 4: Simplify right side
    21,859.44x = 205,818,617.80
  5. Step 5: Solve for x
    x = 205,818,617.80/21,859.44
  6. Step 6: Final answer
    x = 9,415.55

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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.