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Finding the Fourth Proportional to 21,994.47, 32,991.24 and 5,354.61

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Solution

The fourth proportional to 21,994.47, 32,991.24 and 5,354.61 is: 8,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.47 : 32,991.24 = 5,354.61 : x
  2. Step 2: Convert to fraction form
    21,994.47/32,991.24 = 5,354.61/x
  3. Step 3: Cross multiply
    21,994.47x = 32,991.24 × 5,354.61
  4. Step 4: Simplify right side
    21,994.47x = 176,655,223.62
  5. Step 5: Solve for x
    x = 176,655,223.62/21,994.47
  6. Step 6: Final answer
    x = 8,031.80

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1.5x scale

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.