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Finding the Fourth Proportional to 7,003,155.06, 9,664,353.99 and 3,783,891.06

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Solution

The fourth proportional to 7,003,155.06, 9,664,353.99 and 3,783,891.06 is: 5,221,769.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,003,155.06 : 9,664,353.99 = 3,783,891.06 : x
  2. Step 2: Convert to fraction form
    7,003,155.06/9,664,353.99 = 3,783,891.06/x
  3. Step 3: Cross multiply
    7,003,155.06x = 9,664,353.99 × 3,783,891.06
  4. Step 4: Simplify right side
    7,003,155.06x = 36,568,862,663,436.33
  5. Step 5: Solve for x
    x = 36,568,862,663,436.33/7,003,155.06
  6. Step 6: Final answer
    x = 5,221,769.67

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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.