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Finding the Fourth Proportional to 156,782.92, 216,360.84 and 85,162.36

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Solution

The fourth proportional to 156,782.92, 216,360.84 and 85,162.36 is: 117,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.92 : 216,360.84 = 85,162.36 : x
  2. Step 2: Convert to fraction form
    156,782.92/216,360.84 = 85,162.36/x
  3. Step 3: Cross multiply
    156,782.92x = 216,360.84 × 85,162.36
  4. Step 4: Simplify right side
    156,782.92x = 18,425,799,745.98
  5. Step 5: Solve for x
    x = 18,425,799,745.98/156,782.92
  6. Step 6: Final answer
    x = 117,524.28

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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.