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Finding the Fourth Proportional to 7,190,358.06, 9,916,122.54 and 5,620,697.22

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Solution

The fourth proportional to 7,190,358.06, 9,916,122.54 and 5,620,697.22 is: 7,751,425.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190,358.06 : 9,916,122.54 = 5,620,697.22 : x
  2. Step 2: Convert to fraction form
    7,190,358.06/9,916,122.54 = 5,620,697.22/x
  3. Step 3: Cross multiply
    7,190,358.06x = 9,916,122.54 × 5,620,697.22
  4. Step 4: Simplify right side
    7,190,358.06x = 55,735,522,393,757.33
  5. Step 5: Solve for x
    x = 55,735,522,393,757.33/7,190,358.06
  6. Step 6: Final answer
    x = 7,751,425.16

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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.