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Finding the Fourth Proportional to 48,479,321.70, 72,718,982.55 and 48,479,321.70

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Solution

The fourth proportional to 48,479,321.70, 72,718,982.55 and 48,479,321.70 is: 72,718,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,479,321.70 : 72,718,982.55 = 48,479,321.70 : x
  2. Step 2: Convert to fraction form
    48,479,321.70/72,718,982.55 = 48,479,321.70/x
  3. Step 3: Cross multiply
    48,479,321.70x = 72,718,982.55 × 48,479,321.70
  4. Step 4: Simplify right side
    48,479,321.70x = 3,525,366,948,738,136.50
  5. Step 5: Solve for x
    x = 3,525,366,948,738,136.50/48,479,321.70
  6. Step 6: Final answer
    x = 72,718,982.55

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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.