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Finding the Fourth Proportional to 58,091.81, 87,118.25 and 18,639.54

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Solution

The fourth proportional to 58,091.81, 87,118.25 and 18,639.54 is: 27,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,091.81 : 87,118.25 = 18,639.54 : x
  2. Step 2: Convert to fraction form
    58,091.81/87,118.25 = 18,639.54/x
  3. Step 3: Cross multiply
    58,091.81x = 87,118.25 × 18,639.54
  4. Step 4: Simplify right side
    58,091.81x = 1,623,844,012.41
  5. Step 5: Solve for x
    x = 1,623,844,012.41/58,091.81
  6. Step 6: Final answer
    x = 27,953.07

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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.