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Finding the Fourth Proportional to 193,728.76, 290,640.02 and 67,350.76

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Solution

The fourth proportional to 193,728.76, 290,640.02 and 67,350.76 is: 101,042.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,728.76 : 290,640.02 = 67,350.76 : x
  2. Step 2: Convert to fraction form
    193,728.76/290,640.02 = 67,350.76/x
  3. Step 3: Cross multiply
    193,728.76x = 290,640.02 × 67,350.76
  4. Step 4: Simplify right side
    193,728.76x = 19,574,826,233.42
  5. Step 5: Solve for x
    x = 19,574,826,233.42/193,728.76
  6. Step 6: Final answer
    x = 101,042.44

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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.