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Finding the Fourth Proportional to 58,625.91, 87,920.40 and 19,173.81

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Solution

The fourth proportional to 58,625.91, 87,920.40 and 19,173.81 is: 28,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,625.91 : 87,920.40 = 19,173.81 : x
  2. Step 2: Convert to fraction form
    58,625.91/87,920.40 = 19,173.81/x
  3. Step 3: Cross multiply
    58,625.91x = 87,920.40 × 19,173.81
  4. Step 4: Simplify right side
    58,625.91x = 1,685,769,446.33
  5. Step 5: Solve for x
    x = 1,685,769,446.33/58,625.91
  6. Step 6: Final answer
    x = 28,754.68

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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.