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Finding the Fourth Proportional to 156,647.61, 216,177.54 and 85,027.44

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Solution

The fourth proportional to 156,647.61, 216,177.54 and 85,027.44 is: 117,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,647.61 : 216,177.54 = 85,027.44 : x
  2. Step 2: Convert to fraction form
    156,647.61/216,177.54 = 85,027.44/x
  3. Step 3: Cross multiply
    156,647.61x = 216,177.54 × 85,027.44
  4. Step 4: Simplify right side
    156,647.61x = 18,381,022,811.70
  5. Step 5: Solve for x
    x = 18,381,022,811.70/156,647.61
  6. Step 6: Final answer
    x = 117,339.95

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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.