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Finding the Fourth Proportional to 21,959.02, 32,943.77 and 7,167.96

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Solution

The fourth proportional to 21,959.02, 32,943.77 and 7,167.96 is: 10,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.02 : 32,943.77 = 7,167.96 : x
  2. Step 2: Convert to fraction form
    21,959.02/32,943.77 = 7,167.96/x
  3. Step 3: Cross multiply
    21,959.02x = 32,943.77 × 7,167.96
  4. Step 4: Simplify right side
    21,959.02x = 236,139,625.61
  5. Step 5: Solve for x
    x = 236,139,625.61/21,959.02
  6. Step 6: Final answer
    x = 10,753.65

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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.