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Finding the Fourth Proportional to 447,891.40, 618,079.44 and 256,892.60

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Solution

The fourth proportional to 447,891.40, 618,079.44 and 256,892.60 is: 354,505.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,891.40 : 618,079.44 = 256,892.60 : x
  2. Step 2: Convert to fraction form
    447,891.40/618,079.44 = 256,892.60/x
  3. Step 3: Cross multiply
    447,891.40x = 618,079.44 × 256,892.60
  4. Step 4: Simplify right side
    447,891.40x = 158,780,034,348.14
  5. Step 5: Solve for x
    x = 158,780,034,348.14/447,891.40
  6. Step 6: Final answer
    x = 354,505.66

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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.