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Finding the Fourth Proportional to 58,758.70, 81,086.53 and 31,900.66

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Solution

The fourth proportional to 58,758.70, 81,086.53 and 31,900.66 is: 44,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,758.70 : 81,086.53 = 31,900.66 : x
  2. Step 2: Convert to fraction form
    58,758.70/81,086.53 = 31,900.66/x
  3. Step 3: Cross multiply
    58,758.70x = 81,086.53 × 31,900.66
  4. Step 4: Simplify right side
    58,758.70x = 2,586,713,418.68
  5. Step 5: Solve for x
    x = 2,586,713,418.68/58,758.70
  6. Step 6: Final answer
    x = 44,022.65

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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.