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Finding the Fourth Proportional to 21,833.80, 32,750.70 and 19,414.60

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Solution

The fourth proportional to 21,833.80, 32,750.70 and 19,414.60 is: 29,121.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,833.80 : 32,750.70 = 19,414.60 : x
  2. Step 2: Convert to fraction form
    21,833.80/32,750.70 = 19,414.60/x
  3. Step 3: Cross multiply
    21,833.80x = 32,750.70 × 19,414.60
  4. Step 4: Simplify right side
    21,833.80x = 635,841,740.22
  5. Step 5: Solve for x
    x = 635,841,740.22/21,833.80
  6. Step 6: Final answer
    x = 29,121.90

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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.