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Finding the Fourth Proportional to 147,792.38, 203,953.50 and 80,724.38

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Solution

The fourth proportional to 147,792.38, 203,953.50 and 80,724.38 is: 111,399.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,792.38 : 203,953.50 = 80,724.38 : x
  2. Step 2: Convert to fraction form
    147,792.38/203,953.50 = 80,724.38/x
  3. Step 3: Cross multiply
    147,792.38x = 203,953.50 × 80,724.38
  4. Step 4: Simplify right side
    147,792.38x = 16,464,018,816.56
  5. Step 5: Solve for x
    x = 16,464,018,816.56/147,792.38
  6. Step 6: Final answer
    x = 111,399.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.