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Finding the Fourth Proportional to 617,872.80, 926,809.20 and 197,191.20

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Solution

The fourth proportional to 617,872.80, 926,809.20 and 197,191.20 is: 295,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,872.80 : 926,809.20 = 197,191.20 : x
  2. Step 2: Convert to fraction form
    617,872.80/926,809.20 = 197,191.20/x
  3. Step 3: Cross multiply
    617,872.80x = 926,809.20 × 197,191.20
  4. Step 4: Simplify right side
    617,872.80x = 182,758,618,319.04
  5. Step 5: Solve for x
    x = 182,758,618,319.04/617,872.80
  6. Step 6: Final answer
    x = 295,786.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.