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Finding the Fourth Proportional to 58,321.52, 87,496.15 and 18,878.62

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Solution

The fourth proportional to 58,321.52, 87,496.15 and 18,878.62 is: 28,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,321.52 : 87,496.15 = 18,878.62 : x
  2. Step 2: Convert to fraction form
    58,321.52/87,496.15 = 18,878.62/x
  3. Step 3: Cross multiply
    58,321.52x = 87,496.15 × 18,878.62
  4. Step 4: Simplify right side
    58,321.52x = 1,651,806,500.83
  5. Step 5: Solve for x
    x = 1,651,806,500.83/58,321.52
  6. Step 6: Final answer
    x = 28,322.42

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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.