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Finding the Fourth Proportional to 57,062.22, 78,721.10 and 34,388.33

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Solution

The fourth proportional to 57,062.22, 78,721.10 and 34,388.33 is: 47,440.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,062.22 : 78,721.10 = 34,388.33 : x
  2. Step 2: Convert to fraction form
    57,062.22/78,721.10 = 34,388.33/x
  3. Step 3: Cross multiply
    57,062.22x = 78,721.10 × 34,388.33
  4. Step 4: Simplify right side
    57,062.22x = 2,707,087,164.76
  5. Step 5: Solve for x
    x = 2,707,087,164.76/57,062.22
  6. Step 6: Final answer
    x = 47,440.97

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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.