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Finding the Fourth Proportional to 57,166.80, 85,721.40 and 33,800.40

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Solution

The fourth proportional to 57,166.80, 85,721.40 and 33,800.40 is: 50,683.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,166.80 : 85,721.40 = 33,800.40 : x
  2. Step 2: Convert to fraction form
    57,166.80/85,721.40 = 33,800.40/x
  3. Step 3: Cross multiply
    57,166.80x = 85,721.40 × 33,800.40
  4. Step 4: Simplify right side
    57,166.80x = 2,897,417,608.56
  5. Step 5: Solve for x
    x = 2,897,417,608.56/57,166.80
  6. Step 6: Final answer
    x = 50,683.57

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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.