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Finding the Fourth Proportional to 124,523.20, 186,493.20 and 84,865.60

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Solution

The fourth proportional to 124,523.20, 186,493.20 and 84,865.60 is: 127,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,523.20 : 186,493.20 = 84,865.60 : x
  2. Step 2: Convert to fraction form
    124,523.20/186,493.20 = 84,865.60/x
  3. Step 3: Cross multiply
    124,523.20x = 186,493.20 × 84,865.60
  4. Step 4: Simplify right side
    124,523.20x = 15,826,857,313.92
  5. Step 5: Solve for x
    x = 15,826,857,313.92/124,523.20
  6. Step 6: Final answer
    x = 127,099.67

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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.