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Finding the Fourth Proportional to 38,649.80, 57,983.10 and 22,017.80

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Solution

The fourth proportional to 38,649.80, 57,983.10 and 22,017.80 is: 33,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,649.80 : 57,983.10 = 22,017.80 : x
  2. Step 2: Convert to fraction form
    38,649.80/57,983.10 = 22,017.80/x
  3. Step 3: Cross multiply
    38,649.80x = 57,983.10 × 22,017.80
  4. Step 4: Simplify right side
    38,649.80x = 1,276,660,299.18
  5. Step 5: Solve for x
    x = 1,276,660,299.18/38,649.80
  6. Step 6: Final answer
    x = 33,031.49

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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.