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Finding the Fourth Proportional to 29,112.80, 43,669.20 and 22,114.40

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Solution

The fourth proportional to 29,112.80, 43,669.20 and 22,114.40 is: 33,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,112.80 : 43,669.20 = 22,114.40 : x
  2. Step 2: Convert to fraction form
    29,112.80/43,669.20 = 22,114.40/x
  3. Step 3: Cross multiply
    29,112.80x = 43,669.20 × 22,114.40
  4. Step 4: Simplify right side
    29,112.80x = 965,718,156.48
  5. Step 5: Solve for x
    x = 965,718,156.48/29,112.80
  6. Step 6: Final answer
    x = 33,171.60

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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.