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Finding the Fourth Proportional to 451,031.44, 622,407.14 and 257,449.13

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Solution

The fourth proportional to 451,031.44, 622,407.14 and 257,449.13 is: 355,270.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,031.44 : 622,407.14 = 257,449.13 : x
  2. Step 2: Convert to fraction form
    451,031.44/622,407.14 = 257,449.13/x
  3. Step 3: Cross multiply
    451,031.44x = 622,407.14 × 257,449.13
  4. Step 4: Simplify right side
    451,031.44x = 160,238,179,100.01
  5. Step 5: Solve for x
    x = 160,238,179,100.01/451,031.44
  6. Step 6: Final answer
    x = 355,270.53

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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.