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Finding the Fourth Proportional to 644,885.80, 966,983.10 and 270,485.80

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Solution

The fourth proportional to 644,885.80, 966,983.10 and 270,485.80 is: 405,583.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,885.80 : 966,983.10 = 270,485.80 : x
  2. Step 2: Convert to fraction form
    644,885.80/966,983.10 = 270,485.80/x
  3. Step 3: Cross multiply
    644,885.80x = 966,983.10 × 270,485.80
  4. Step 4: Simplify right side
    644,885.80x = 261,555,197,389.98
  5. Step 5: Solve for x
    x = 261,555,197,389.98/644,885.80
  6. Step 6: Final answer
    x = 405,583.74

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Half scale
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Double scale
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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.