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Finding the Fourth Proportional to 58,781.34, 81,118.84 and 31,924.37

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Solution

The fourth proportional to 58,781.34, 81,118.84 and 31,924.37 is: 44,055.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,781.34 : 81,118.84 = 31,924.37 : x
  2. Step 2: Convert to fraction form
    58,781.34/81,118.84 = 31,924.37/x
  3. Step 3: Cross multiply
    58,781.34x = 81,118.84 × 31,924.37
  4. Step 4: Simplify right side
    58,781.34x = 2,589,667,985.12
  5. Step 5: Solve for x
    x = 2,589,667,985.12/58,781.34
  6. Step 6: Final answer
    x = 44,055.95

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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.