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Finding the Fourth Proportional to 58,640.31, 87,965.64 and 16,520.76

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Solution

The fourth proportional to 58,640.31, 87,965.64 and 16,520.76 is: 24,782.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,640.31 : 87,965.64 = 16,520.76 : x
  2. Step 2: Convert to fraction form
    58,640.31/87,965.64 = 16,520.76/x
  3. Step 3: Cross multiply
    58,640.31x = 87,965.64 × 16,520.76
  4. Step 4: Simplify right side
    58,640.31x = 1,453,259,226.69
  5. Step 5: Solve for x
    x = 1,453,259,226.69/58,640.31
  6. Step 6: Final answer
    x = 24,782.60

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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.