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Finding the Fourth Proportional to 548,605.40, 822,908.10 and 193,616.60

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Solution

The fourth proportional to 548,605.40, 822,908.10 and 193,616.60 is: 290,424.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,605.40 : 822,908.10 = 193,616.60 : x
  2. Step 2: Convert to fraction form
    548,605.40/822,908.10 = 193,616.60/x
  3. Step 3: Cross multiply
    548,605.40x = 822,908.10 × 193,616.60
  4. Step 4: Simplify right side
    548,605.40x = 159,328,668,434.46
  5. Step 5: Solve for x
    x = 159,328,668,434.46/548,605.40
  6. Step 6: Final answer
    x = 290,424.90

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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.