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Finding the Fourth Proportional to 156,908.40, 235,216.80 and 109,523.40

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Solution

The fourth proportional to 156,908.40, 235,216.80 and 109,523.40 is: 164,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,908.40 : 235,216.80 = 109,523.40 : x
  2. Step 2: Convert to fraction form
    156,908.40/235,216.80 = 109,523.40/x
  3. Step 3: Cross multiply
    156,908.40x = 235,216.80 × 109,523.40
  4. Step 4: Simplify right side
    156,908.40x = 25,761,743,673.12
  5. Step 5: Solve for x
    x = 25,761,743,673.12/156,908.40
  6. Step 6: Final answer
    x = 164,183.33

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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.