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Finding the Fourth Proportional to 68,900.77, 95,093.46 and 42,058.90

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Solution

The fourth proportional to 68,900.77, 95,093.46 and 42,058.90 is: 58,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,900.77 : 95,093.46 = 42,058.90 : x
  2. Step 2: Convert to fraction form
    68,900.77/95,093.46 = 42,058.90/x
  3. Step 3: Cross multiply
    68,900.77x = 95,093.46 × 42,058.90
  4. Step 4: Simplify right side
    68,900.77x = 3,999,526,324.79
  5. Step 5: Solve for x
    x = 3,999,526,324.79/68,900.77
  6. Step 6: Final answer
    x = 58,047.63

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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.