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Finding the Fourth Proportional to 3,886,998.82, 5,364,298.65 and 2,144,659.66

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Solution

The fourth proportional to 3,886,998.82, 5,364,298.65 and 2,144,659.66 is: 2,959,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886,998.82 : 5,364,298.65 = 2,144,659.66 : x
  2. Step 2: Convert to fraction form
    3,886,998.82/5,364,298.65 = 2,144,659.66/x
  3. Step 3: Cross multiply
    3,886,998.82x = 5,364,298.65 × 2,144,659.66
  4. Step 4: Simplify right side
    3,886,998.82x = 11,504,594,918,847.46
  5. Step 5: Solve for x
    x = 11,504,594,918,847.46/3,886,998.82
  6. Step 6: Final answer
    x = 2,959,762.90

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