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Finding the Fourth Proportional to 58,287.75, 87,410.17 and 20,837.67

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Solution

The fourth proportional to 58,287.75, 87,410.17 and 20,837.67 is: 31,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,287.75 : 87,410.17 = 20,837.67 : x
  2. Step 2: Convert to fraction form
    58,287.75/87,410.17 = 20,837.67/x
  3. Step 3: Cross multiply
    58,287.75x = 87,410.17 × 20,837.67
  4. Step 4: Simplify right side
    58,287.75x = 1,821,424,277.10
  5. Step 5: Solve for x
    x = 1,821,424,277.10/58,287.75
  6. Step 6: Final answer
    x = 31,248.83

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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.