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Finding the Fourth Proportional to 60,462,919.80, 90,694,379.70 and 20,073,403.80

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Solution

The fourth proportional to 60,462,919.80, 90,694,379.70 and 20,073,403.80 is: 30,110,105.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,462,919.80 : 90,694,379.70 = 20,073,403.80 : x
  2. Step 2: Convert to fraction form
    60,462,919.80/90,694,379.70 = 20,073,403.80/x
  3. Step 3: Cross multiply
    60,462,919.80x = 90,694,379.70 × 20,073,403.80
  4. Step 4: Simplify right side
    60,462,919.80x = 1,820,544,906,108,623
  5. Step 5: Solve for x
    x = 1,820,544,906,108,623/60,462,919.80
  6. Step 6: Final answer
    x = 30,110,105.70

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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.