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Finding the Fourth Proportional to 82,487,355.80, 123,731,033.70 and 82,487,355.80

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Solution

The fourth proportional to 82,487,355.80, 123,731,033.70 and 82,487,355.80 is: 123,731,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,487,355.80 : 123,731,033.70 = 82,487,355.80 : x
  2. Step 2: Convert to fraction form
    82,487,355.80/123,731,033.70 = 82,487,355.80/x
  3. Step 3: Cross multiply
    82,487,355.80x = 123,731,033.70 × 82,487,355.80
  4. Step 4: Simplify right side
    82,487,355.80x = 10,206,245,800,313,690
  5. Step 5: Solve for x
    x = 10,206,245,800,313,690/82,487,355.80
  6. Step 6: Final answer
    x = 123,731,033.70

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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.