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Finding the Fourth Proportional to 7,950,231.06, 10,978,138.07 and 7,693,146.51

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Solution

The fourth proportional to 7,950,231.06, 10,978,138.07 and 7,693,146.51 is: 10,623,140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950,231.06 : 10,978,138.07 = 7,693,146.51 : x
  2. Step 2: Convert to fraction form
    7,950,231.06/10,978,138.07 = 7,693,146.51/x
  3. Step 3: Cross multiply
    7,950,231.06x = 10,978,138.07 × 7,693,146.51
  4. Step 4: Simplify right side
    7,950,231.06x = 84,456,424,579,518.64
  5. Step 5: Solve for x
    x = 84,456,424,579,518.64/7,950,231.06
  6. Step 6: Final answer
    x = 10,623,140.88

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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.