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Finding the Fourth Proportional to 72,058.74, 99,412.48 and 48,147.54

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Solution

The fourth proportional to 72,058.74, 99,412.48 and 48,147.54 is: 66,424.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,058.74 : 99,412.48 = 48,147.54 : x
  2. Step 2: Convert to fraction form
    72,058.74/99,412.48 = 48,147.54/x
  3. Step 3: Cross multiply
    72,058.74x = 99,412.48 × 48,147.54
  4. Step 4: Simplify right side
    72,058.74x = 4,786,466,357.30
  5. Step 5: Solve for x
    x = 4,786,466,357.30/72,058.74
  6. Step 6: Final answer
    x = 66,424.51

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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.