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Finding the Fourth Proportional to 66,885,867.80, 100,328,801.70 and 44,001,427.85

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Solution

The fourth proportional to 66,885,867.80, 100,328,801.70 and 44,001,427.85 is: 66,002,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,885,867.80 : 100,328,801.70 = 44,001,427.85 : x
  2. Step 2: Convert to fraction form
    66,885,867.80/100,328,801.70 = 44,001,427.85/x
  3. Step 3: Cross multiply
    66,885,867.80x = 100,328,801.70 × 44,001,427.85
  4. Step 4: Simplify right side
    66,885,867.80x = 4,414,610,529,279,507.50
  5. Step 5: Solve for x
    x = 4,414,610,529,279,507.50/66,885,867.80
  6. Step 6: Final answer
    x = 66,002,141.78

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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.