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Finding the Fourth Proportional to 57,731.61, 79,661.07 and 35,058.78

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Solution

The fourth proportional to 57,731.61, 79,661.07 and 35,058.78 is: 48,375.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,731.61 : 79,661.07 = 35,058.78 : x
  2. Step 2: Convert to fraction form
    57,731.61/79,661.07 = 35,058.78/x
  3. Step 3: Cross multiply
    57,731.61x = 79,661.07 × 35,058.78
  4. Step 4: Simplify right side
    57,731.61x = 2,792,819,927.69
  5. Step 5: Solve for x
    x = 2,792,819,927.69/57,731.61
  6. Step 6: Final answer
    x = 48,375.92

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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.