Home / 18,858,351.96-28,301,608.98-12,778,664.76

Finding the Fourth Proportional to 18,858,351.96, 28,301,608.98 and 12,778,664.76

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Solution

The fourth proportional to 18,858,351.96, 28,301,608.98 and 12,778,664.76 is: 19,177,538.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,351.96 : 28,301,608.98 = 12,778,664.76 : x
  2. Step 2: Convert to fraction form
    18,858,351.96/28,301,608.98 = 12,778,664.76/x
  3. Step 3: Cross multiply
    18,858,351.96x = 28,301,608.98 × 12,778,664.76
  4. Step 4: Simplify right side
    18,858,351.96x = 361,656,773,324,025.56
  5. Step 5: Solve for x
    x = 361,656,773,324,025.56/18,858,351.96
  6. Step 6: Final answer
    x = 19,177,538.64

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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.