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Finding the Fourth Proportional to 57,624.72, 86,378.72 and 38,858.64

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Solution

The fourth proportional to 57,624.72, 86,378.72 and 38,858.64 is: 58,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,624.72 : 86,378.72 = 38,858.64 : x
  2. Step 2: Convert to fraction form
    57,624.72/86,378.72 = 38,858.64/x
  3. Step 3: Cross multiply
    57,624.72x = 86,378.72 × 38,858.64
  4. Step 4: Simplify right side
    57,624.72x = 3,356,559,584.14
  5. Step 5: Solve for x
    x = 3,356,559,584.14/57,624.72
  6. Step 6: Final answer
    x = 58,248.61

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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.