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Finding the Fourth Proportional to 447,889.68, 618,168.24 and 256,966.20

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Solution

The fourth proportional to 447,889.68, 618,168.24 and 256,966.20 is: 354,659.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,889.68 : 618,168.24 = 256,966.20 : x
  2. Step 2: Convert to fraction form
    447,889.68/618,168.24 = 256,966.20/x
  3. Step 3: Cross multiply
    447,889.68x = 618,168.24 × 256,966.20
  4. Step 4: Simplify right side
    447,889.68x = 158,848,343,593.49
  5. Step 5: Solve for x
    x = 158,848,343,593.49/447,889.68
  6. Step 6: Final answer
    x = 354,659.53

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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.