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Finding the Fourth Proportional to 558,029.39, 768,713.90 and 404,616.80

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Solution

The fourth proportional to 558,029.39, 768,713.90 and 404,616.80 is: 557,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,029.39 : 768,713.90 = 404,616.80 : x
  2. Step 2: Convert to fraction form
    558,029.39/768,713.90 = 404,616.80/x
  3. Step 3: Cross multiply
    558,029.39x = 768,713.90 × 404,616.80
  4. Step 4: Simplify right side
    558,029.39x = 311,034,558,232.22
  5. Step 5: Solve for x
    x = 311,034,558,232.22/558,029.39
  6. Step 6: Final answer
    x = 557,380.25

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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.