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Finding the Fourth Proportional to 681,154.28, 940,022.06 and 379,348.28

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Solution

The fourth proportional to 681,154.28, 940,022.06 and 379,348.28 is: 523,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,154.28 : 940,022.06 = 379,348.28 : x
  2. Step 2: Convert to fraction form
    681,154.28/940,022.06 = 379,348.28/x
  3. Step 3: Cross multiply
    681,154.28x = 940,022.06 × 379,348.28
  4. Step 4: Simplify right side
    681,154.28x = 356,595,751,623.06
  5. Step 5: Solve for x
    x = 356,595,751,623.06/681,154.28
  6. Step 6: Final answer
    x = 523,516.86

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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.