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Finding the Fourth Proportional to 58,581.75, 87,873.72 and 21,144.63

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Solution

The fourth proportional to 58,581.75, 87,873.72 and 21,144.63 is: 31,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,581.75 : 87,873.72 = 21,144.63 : x
  2. Step 2: Convert to fraction form
    58,581.75/87,873.72 = 21,144.63/x
  3. Step 3: Cross multiply
    58,581.75x = 87,873.72 × 21,144.63
  4. Step 4: Simplify right side
    58,581.75x = 1,858,057,296.12
  5. Step 5: Solve for x
    x = 1,858,057,296.12/58,581.75
  6. Step 6: Final answer
    x = 31,717.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.