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Finding the Fourth Proportional to 644,920.20, 967,380.30 and 171,653.40

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Solution

The fourth proportional to 644,920.20, 967,380.30 and 171,653.40 is: 257,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,920.20 : 967,380.30 = 171,653.40 : x
  2. Step 2: Convert to fraction form
    644,920.20/967,380.30 = 171,653.40/x
  3. Step 3: Cross multiply
    644,920.20x = 967,380.30 × 171,653.40
  4. Step 4: Simplify right side
    644,920.20x = 166,054,117,588.02
  5. Step 5: Solve for x
    x = 166,054,117,588.02/644,920.20
  6. Step 6: Final answer
    x = 257,480.10

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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.