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Finding the Fourth Proportional to 156,644.91, 216,170.24 and 85,024.91

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Solution

The fourth proportional to 156,644.91, 216,170.24 and 85,024.91 is: 117,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,644.91 : 216,170.24 = 85,024.91 : x
  2. Step 2: Convert to fraction form
    156,644.91/216,170.24 = 85,024.91/x
  3. Step 3: Cross multiply
    156,644.91x = 216,170.24 × 85,024.91
  4. Step 4: Simplify right side
    156,644.91x = 18,379,855,315.98
  5. Step 5: Solve for x
    x = 18,379,855,315.98/156,644.91
  6. Step 6: Final answer
    x = 117,334.52

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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.