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Finding the Fourth Proportional to 58,499.88, 87,766.83 and 21,059.28

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Solution

The fourth proportional to 58,499.88, 87,766.83 and 21,059.28 is: 31,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,499.88 : 87,766.83 = 21,059.28 : x
  2. Step 2: Convert to fraction form
    58,499.88/87,766.83 = 21,059.28/x
  3. Step 3: Cross multiply
    58,499.88x = 87,766.83 × 21,059.28
  4. Step 4: Simplify right side
    58,499.88x = 1,848,306,247.68
  5. Step 5: Solve for x
    x = 1,848,306,247.68/58,499.88
  6. Step 6: Final answer
    x = 31,595.04

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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.