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Finding the Fourth Proportional to 663,140,620.20, 994,710,930.30 and 663,140,620.20

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Solution

The fourth proportional to 663,140,620.20, 994,710,930.30 and 663,140,620.20 is: 994,710,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,140,620.20 : 994,710,930.30 = 663,140,620.20 : x
  2. Step 2: Convert to fraction form
    663,140,620.20/994,710,930.30 = 663,140,620.20/x
  3. Step 3: Cross multiply
    663,140,620.20x = 994,710,930.30 × 663,140,620.20
  4. Step 4: Simplify right side
    663,140,620.20x = 659,633,223,238,860,928
  5. Step 5: Solve for x
    x = 659,633,223,238,860,928/663,140,620.20
  6. Step 6: Final answer
    x = 994,710,930.30

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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.