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Finding the Fourth Proportional to 7,978,946.46, 11,003,471.91 and 6,352,722.06

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Solution

The fourth proportional to 7,978,946.46, 11,003,471.91 and 6,352,722.06 is: 8,760,805.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,946.46 : 11,003,471.91 = 6,352,722.06 : x
  2. Step 2: Convert to fraction form
    7,978,946.46/11,003,471.91 = 6,352,722.06/x
  3. Step 3: Cross multiply
    7,978,946.46x = 11,003,471.91 × 6,352,722.06
  4. Step 4: Simplify right side
    7,978,946.46x = 69,901,998,739,247.33
  5. Step 5: Solve for x
    x = 69,901,998,739,247.33/7,978,946.46
  6. Step 6: Final answer
    x = 8,760,805.59

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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.