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Finding the Fourth Proportional to 58,408.72, 87,605.40 and 16,859.92

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Solution

The fourth proportional to 58,408.72, 87,605.40 and 16,859.92 is: 25,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,408.72 : 87,605.40 = 16,859.92 : x
  2. Step 2: Convert to fraction form
    58,408.72/87,605.40 = 16,859.92/x
  3. Step 3: Cross multiply
    58,408.72x = 87,605.40 × 16,859.92
  4. Step 4: Simplify right side
    58,408.72x = 1,477,020,035.57
  5. Step 5: Solve for x
    x = 1,477,020,035.57/58,408.72
  6. Step 6: Final answer
    x = 25,287.66

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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.