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Finding the Fourth Proportional to 681,298.46, 940,183.18 and 371,213.97

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Solution

The fourth proportional to 681,298.46, 940,183.18 and 371,213.97 is: 512,270.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,298.46 : 940,183.18 = 371,213.97 : x
  2. Step 2: Convert to fraction form
    681,298.46/940,183.18 = 371,213.97/x
  3. Step 3: Cross multiply
    681,298.46x = 940,183.18 × 371,213.97
  4. Step 4: Simplify right side
    681,298.46x = 349,009,130,775.03
  5. Step 5: Solve for x
    x = 349,009,130,775.03/681,298.46
  6. Step 6: Final answer
    x = 512,270.54

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Double scale
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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.