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Finding the Fourth Proportional to 447,175.20, 617,189.40 and 256,316.40

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Solution

The fourth proportional to 447,175.20, 617,189.40 and 256,316.40 is: 353,766.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,175.20 : 617,189.40 = 256,316.40 : x
  2. Step 2: Convert to fraction form
    447,175.20/617,189.40 = 256,316.40/x
  3. Step 3: Cross multiply
    447,175.20x = 617,189.40 × 256,316.40
  4. Step 4: Simplify right side
    447,175.20x = 158,195,765,126.16
  5. Step 5: Solve for x
    x = 158,195,765,126.16/447,175.20
  6. Step 6: Final answer
    x = 353,766.86

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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.