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Finding the Fourth Proportional to 644,992.39, 967,488.79 and 189,583.72

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Solution

The fourth proportional to 644,992.39, 967,488.79 and 189,583.72 is: 284,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,992.39 : 967,488.79 = 189,583.72 : x
  2. Step 2: Convert to fraction form
    644,992.39/967,488.79 = 189,583.72/x
  3. Step 3: Cross multiply
    644,992.39x = 967,488.79 × 189,583.72
  4. Step 4: Simplify right side
    644,992.39x = 183,420,121,329.29
  5. Step 5: Solve for x
    x = 183,420,121,329.29/644,992.39
  6. Step 6: Final answer
    x = 284,375.64

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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.