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Finding the Fourth Proportional to 103,633.90, 155,450.85 and 103,633.90

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Solution

The fourth proportional to 103,633.90, 155,450.85 and 103,633.90 is: 155,450.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,633.90 : 155,450.85 = 103,633.90 : x
  2. Step 2: Convert to fraction form
    103,633.90/155,450.85 = 103,633.90/x
  3. Step 3: Cross multiply
    103,633.90x = 155,450.85 × 103,633.90
  4. Step 4: Simplify right side
    103,633.90x = 16,109,977,843.82
  5. Step 5: Solve for x
    x = 16,109,977,843.82/103,633.90
  6. Step 6: Final answer
    x = 155,450.85

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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.