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Finding the Fourth Proportional to 58,859.90, 81,190.22 and 51,324.32

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Solution

The fourth proportional to 58,859.90, 81,190.22 and 51,324.32 is: 70,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,859.90 : 81,190.22 = 51,324.32 : x
  2. Step 2: Convert to fraction form
    58,859.90/81,190.22 = 51,324.32/x
  3. Step 3: Cross multiply
    58,859.90x = 81,190.22 × 51,324.32
  4. Step 4: Simplify right side
    58,859.90x = 4,167,032,832.15
  5. Step 5: Solve for x
    x = 4,167,032,832.15/58,859.90
  6. Step 6: Final answer
    x = 70,795.79

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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.