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Finding the Fourth Proportional to 18,144,872.20, 25,436,413.40 and 18,144,872.20

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Solution

The fourth proportional to 18,144,872.20, 25,436,413.40 and 18,144,872.20 is: 25,436,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144,872.20 : 25,436,413.40 = 18,144,872.20 : x
  2. Step 2: Convert to fraction form
    18,144,872.20/25,436,413.40 = 18,144,872.20/x
  3. Step 3: Cross multiply
    18,144,872.20x = 25,436,413.40 × 18,144,872.20
  4. Step 4: Simplify right side
    18,144,872.20x = 461,540,470,369,367.44
  5. Step 5: Solve for x
    x = 461,540,470,369,367.44/18,144,872.20
  6. Step 6: Final answer
    x = 25,436,413.40

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.