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Finding the Fourth Proportional to 156,645.68, 216,170.30 and 85,025.07

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Solution

The fourth proportional to 156,645.68, 216,170.30 and 85,025.07 is: 117,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,645.68 : 216,170.30 = 85,025.07 : x
  2. Step 2: Convert to fraction form
    156,645.68/216,170.30 = 85,025.07/x
  3. Step 3: Cross multiply
    156,645.68x = 216,170.30 × 85,025.07
  4. Step 4: Simplify right side
    156,645.68x = 18,379,895,101.98
  5. Step 5: Solve for x
    x = 18,379,895,101.98/156,645.68
  6. Step 6: Final answer
    x = 117,334.20

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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.