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Finding the Fourth Proportional to 58,808.71, 81,138.15 and 33,311.03

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Solution

The fourth proportional to 58,808.71, 81,138.15 and 33,311.03 is: 45,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,808.71 : 81,138.15 = 33,311.03 : x
  2. Step 2: Convert to fraction form
    58,808.71/81,138.15 = 33,311.03/x
  3. Step 3: Cross multiply
    58,808.71x = 81,138.15 × 33,311.03
  4. Step 4: Simplify right side
    58,808.71x = 2,702,795,348.79
  5. Step 5: Solve for x
    x = 2,702,795,348.79/58,808.71
  6. Step 6: Final answer
    x = 45,959.10

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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.