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Finding the Fourth Proportional to 49,171,143.70, 68,705,231.90 and 49,171,143.70

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Solution

The fourth proportional to 49,171,143.70, 68,705,231.90 and 49,171,143.70 is: 68,705,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,171,143.70 : 68,705,231.90 = 49,171,143.70 : x
  2. Step 2: Convert to fraction form
    49,171,143.70/68,705,231.90 = 49,171,143.70/x
  3. Step 3: Cross multiply
    49,171,143.70x = 68,705,231.90 × 49,171,143.70
  4. Step 4: Simplify right side
    49,171,143.70x = 3,378,314,830,696,724.50
  5. Step 5: Solve for x
    x = 3,378,314,830,696,724.50/49,171,143.70
  6. Step 6: Final answer
    x = 68,705,231.90

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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.