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Finding the Fourth Proportional to 65,560,398.13, 90,470,978.22 and 36,191,100.34

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Solution

The fourth proportional to 65,560,398.13, 90,470,978.22 and 36,191,100.34 is: 49,942,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,560,398.13 : 90,470,978.22 = 36,191,100.34 : x
  2. Step 2: Convert to fraction form
    65,560,398.13/90,470,978.22 = 36,191,100.34/x
  3. Step 3: Cross multiply
    65,560,398.13x = 90,470,978.22 × 36,191,100.34
  4. Step 4: Simplify right side
    65,560,398.13x = 3,274,244,250,617,975
  5. Step 5: Solve for x
    x = 3,274,244,250,617,975/65,560,398.13
  6. Step 6: Final answer
    x = 49,942,409.50

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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.