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Finding the Fourth Proportional to 58,782.84, 81,120.92 and 31,925.87

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Solution

The fourth proportional to 58,782.84, 81,120.92 and 31,925.87 is: 44,058.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,782.84 : 81,120.92 = 31,925.87 : x
  2. Step 2: Convert to fraction form
    58,782.84/81,120.92 = 31,925.87/x
  3. Step 3: Cross multiply
    58,782.84x = 81,120.92 × 31,925.87
  4. Step 4: Simplify right side
    58,782.84x = 2,589,855,380.97
  5. Step 5: Solve for x
    x = 2,589,855,380.97/58,782.84
  6. Step 6: Final answer
    x = 44,058.02

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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.