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Finding the Fourth Proportional to 447,168.28, 617,137.50 and 256,207

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Solution

The fourth proportional to 447,168.28, 617,137.50 and 256,207 is: 353,591.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,168.28 : 617,137.50 = 256,207 : x
  2. Step 2: Convert to fraction form
    447,168.28/617,137.50 = 256,207/x
  3. Step 3: Cross multiply
    447,168.28x = 617,137.50 × 256,207
  4. Step 4: Simplify right side
    447,168.28x = 158,114,947,462.50
  5. Step 5: Solve for x
    x = 158,114,947,462.50/447,168.28
  6. Step 6: Final answer
    x = 353,591.60

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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.