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Finding the Fourth Proportional to 58,396.69, 87,580.45 and 18,965.08

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Solution

The fourth proportional to 58,396.69, 87,580.45 and 18,965.08 is: 28,442.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,396.69 : 87,580.45 = 18,965.08 : x
  2. Step 2: Convert to fraction form
    58,396.69/87,580.45 = 18,965.08/x
  3. Step 3: Cross multiply
    58,396.69x = 87,580.45 × 18,965.08
  4. Step 4: Simplify right side
    58,396.69x = 1,660,970,240.69
  5. Step 5: Solve for x
    x = 1,660,970,240.69/58,396.69
  6. Step 6: Final answer
    x = 28,442.88

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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.