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Finding the Fourth Proportional to 59,215.91, 81,717.95 and 31,991.99

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Solution

The fourth proportional to 59,215.91, 81,717.95 and 31,991.99 is: 44,148.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,215.91 : 81,717.95 = 31,991.99 : x
  2. Step 2: Convert to fraction form
    59,215.91/81,717.95 = 31,991.99/x
  3. Step 3: Cross multiply
    59,215.91x = 81,717.95 × 31,991.99
  4. Step 4: Simplify right side
    59,215.91x = 2,614,319,510.61
  5. Step 5: Solve for x
    x = 2,614,319,510.61/59,215.91
  6. Step 6: Final answer
    x = 44,148.94

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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.