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Finding the Fourth Proportional to 20,163,610.40, 30,189,428.40 and 19,603,738.40

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Solution

The fourth proportional to 20,163,610.40, 30,189,428.40 and 19,603,738.40 is: 29,351,174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163,610.40 : 30,189,428.40 = 19,603,738.40 : x
  2. Step 2: Convert to fraction form
    20,163,610.40/30,189,428.40 = 19,603,738.40/x
  3. Step 3: Cross multiply
    20,163,610.40x = 30,189,428.40 × 19,603,738.40
  4. Step 4: Simplify right side
    20,163,610.40x = 591,825,656,799,130.50
  5. Step 5: Solve for x
    x = 591,825,656,799,130.50/20,163,610.40
  6. Step 6: Final answer
    x = 29,351,174.97

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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.