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Finding the Fourth Proportional to 400,798.68, 553,105.86 and 273,471.54

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Solution

The fourth proportional to 400,798.68, 553,105.86 and 273,471.54 is: 377,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,798.68 : 553,105.86 = 273,471.54 : x
  2. Step 2: Convert to fraction form
    400,798.68/553,105.86 = 273,471.54/x
  3. Step 3: Cross multiply
    400,798.68x = 553,105.86 × 273,471.54
  4. Step 4: Simplify right side
    400,798.68x = 151,258,711,317.22
  5. Step 5: Solve for x
    x = 151,258,711,317.22/400,798.68
  6. Step 6: Final answer
    x = 377,393.24

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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.