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Finding the Fourth Proportional to 474,685.44, 655,060.20 and 256,889.04

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Solution

The fourth proportional to 474,685.44, 655,060.20 and 256,889.04 is: 354,503.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,685.44 : 655,060.20 = 256,889.04 : x
  2. Step 2: Convert to fraction form
    474,685.44/655,060.20 = 256,889.04/x
  3. Step 3: Cross multiply
    474,685.44x = 655,060.20 × 256,889.04
  4. Step 4: Simplify right side
    474,685.44x = 168,277,785,920.21
  5. Step 5: Solve for x
    x = 168,277,785,920.21/474,685.44
  6. Step 6: Final answer
    x = 354,503.79

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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.