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Finding the Fourth Proportional to 451,378.47, 622,921.37 and 257,818.03

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Solution

The fourth proportional to 451,378.47, 622,921.37 and 257,818.03 is: 355,799.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,378.47 : 622,921.37 = 257,818.03 : x
  2. Step 2: Convert to fraction form
    451,378.47/622,921.37 = 257,818.03/x
  3. Step 3: Cross multiply
    451,378.47x = 622,921.37 × 257,818.03
  4. Step 4: Simplify right side
    451,378.47x = 160,600,360,458.30
  5. Step 5: Solve for x
    x = 160,600,360,458.30/451,378.47
  6. Step 6: Final answer
    x = 355,799.78

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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.