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Finding the Fourth Proportional to 156,763.26, 216,334.86 and 85,144.68

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Solution

The fourth proportional to 156,763.26, 216,334.86 and 85,144.68 is: 117,500.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,763.26 : 216,334.86 = 85,144.68 : x
  2. Step 2: Convert to fraction form
    156,763.26/216,334.86 = 85,144.68/x
  3. Step 3: Cross multiply
    156,763.26x = 216,334.86 × 85,144.68
  4. Step 4: Simplify right side
    156,763.26x = 18,419,762,427.54
  5. Step 5: Solve for x
    x = 18,419,762,427.54/156,763.26
  6. Step 6: Final answer
    x = 117,500.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.