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Finding the Fourth Proportional to 108,658.20, 162,768.60 and 73,228.80

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Solution

The fourth proportional to 108,658.20, 162,768.60 and 73,228.80 is: 109,695.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,658.20 : 162,768.60 = 73,228.80 : x
  2. Step 2: Convert to fraction form
    108,658.20/162,768.60 = 73,228.80/x
  3. Step 3: Cross multiply
    108,658.20x = 162,768.60 × 73,228.80
  4. Step 4: Simplify right side
    108,658.20x = 11,919,349,255.68
  5. Step 5: Solve for x
    x = 11,919,349,255.68/108,658.20
  6. Step 6: Final answer
    x = 109,695.81

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1.5x scale

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.