Home / 20,115,138.40-30,192,193.77-19,022,731.90

Finding the Fourth Proportional to 20,115,138.40, 30,192,193.77 and 19,022,731.90

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Solution

The fourth proportional to 20,115,138.40, 30,192,193.77 and 19,022,731.90 is: 28,552,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115,138.40 : 30,192,193.77 = 19,022,731.90 : x
  2. Step 2: Convert to fraction form
    20,115,138.40/30,192,193.77 = 19,022,731.90/x
  3. Step 3: Cross multiply
    20,115,138.40x = 30,192,193.77 × 19,022,731.90
  4. Step 4: Simplify right side
    20,115,138.40x = 574,338,007,559,560.25
  5. Step 5: Solve for x
    x = 574,338,007,559,560.25/20,115,138.40
  6. Step 6: Final answer
    x = 28,552,525.77

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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.