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Finding the Fourth Proportional to 131,328,715.20, 196,993,072.80 and 131,328,715.20

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Solution

The fourth proportional to 131,328,715.20, 196,993,072.80 and 131,328,715.20 is: 196,993,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,328,715.20 : 196,993,072.80 = 131,328,715.20 : x
  2. Step 2: Convert to fraction form
    131,328,715.20/196,993,072.80 = 131,328,715.20/x
  3. Step 3: Cross multiply
    131,328,715.20x = 196,993,072.80 × 131,328,715.20
  4. Step 4: Simplify right side
    131,328,715.20x = 25,870,847,154,124,068
  5. Step 5: Solve for x
    x = 25,870,847,154,124,068/131,328,715.20
  6. Step 6: Final answer
    x = 196,993,072.80

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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.