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Finding the Fourth Proportional to 91,224.60, 136,835.46 and 75,609.24

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Solution

The fourth proportional to 91,224.60, 136,835.46 and 75,609.24 is: 113,412.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,224.60 : 136,835.46 = 75,609.24 : x
  2. Step 2: Convert to fraction form
    91,224.60/136,835.46 = 75,609.24/x
  3. Step 3: Cross multiply
    91,224.60x = 136,835.46 × 75,609.24
  4. Step 4: Simplify right side
    91,224.60x = 10,346,025,135.65
  5. Step 5: Solve for x
    x = 10,346,025,135.65/91,224.60
  6. Step 6: Final answer
    x = 113,412.67

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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.