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Finding the Fourth Proportional to 58,580.87, 87,853.13 and 21,136.08

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Solution

The fourth proportional to 58,580.87, 87,853.13 and 21,136.08 is: 31,697.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,580.87 : 87,853.13 = 21,136.08 : x
  2. Step 2: Convert to fraction form
    58,580.87/87,853.13 = 21,136.08/x
  3. Step 3: Cross multiply
    58,580.87x = 87,853.13 × 21,136.08
  4. Step 4: Simplify right side
    58,580.87x = 1,856,870,678.25
  5. Step 5: Solve for x
    x = 1,856,870,678.25/58,580.87
  6. Step 6: Final answer
    x = 31,697.56

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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.