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Finding the Fourth Proportional to 447,154.56, 617,072.85 and 256,168.71

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Solution

The fourth proportional to 447,154.56, 617,072.85 and 256,168.71 is: 353,512.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,154.56 : 617,072.85 = 256,168.71 : x
  2. Step 2: Convert to fraction form
    447,154.56/617,072.85 = 256,168.71/x
  3. Step 3: Cross multiply
    447,154.56x = 617,072.85 × 256,168.71
  4. Step 4: Simplify right side
    447,154.56x = 158,074,755,960.52
  5. Step 5: Solve for x
    x = 158,074,755,960.52/447,154.56
  6. Step 6: Final answer
    x = 353,512.57

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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.