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Finding the Fourth Proportional to 38,952,961.04, 53,753,471.34 and 21,311,777.04

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Solution

The fourth proportional to 38,952,961.04, 53,753,471.34 and 21,311,777.04 is: 29,409,368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,952,961.04 : 53,753,471.34 = 21,311,777.04 : x
  2. Step 2: Convert to fraction form
    38,952,961.04/53,753,471.34 = 21,311,777.04/x
  3. Step 3: Cross multiply
    38,952,961.04x = 53,753,471.34 × 21,311,777.04
  4. Step 4: Simplify right side
    38,952,961.04x = 1,145,581,996,324,110
  5. Step 5: Solve for x
    x = 1,145,581,996,324,110/38,952,961.04
  6. Step 6: Final answer
    x = 29,409,368.78

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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.