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Finding the Fourth Proportional to 65,560,398.72, 90,470,978.82 and 36,191,100.84

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Solution

The fourth proportional to 65,560,398.72, 90,470,978.82 and 36,191,100.84 is: 49,942,410.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,560,398.72 : 90,470,978.82 = 36,191,100.84 : x
  2. Step 2: Convert to fraction form
    65,560,398.72/90,470,978.82 = 36,191,100.84/x
  3. Step 3: Cross multiply
    65,560,398.72x = 90,470,978.82 × 36,191,100.84
  4. Step 4: Simplify right side
    65,560,398.72x = 3,274,244,317,568,124.50
  5. Step 5: Solve for x
    x = 3,274,244,317,568,124.50/65,560,398.72
  6. Step 6: Final answer
    x = 49,942,410.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.