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Finding the Fourth Proportional to 156,684.83, 216,227.67 and 85,064.87

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Solution

The fourth proportional to 156,684.83, 216,227.67 and 85,064.87 is: 117,390.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,684.83 : 216,227.67 = 85,064.87 : x
  2. Step 2: Convert to fraction form
    156,684.83/216,227.67 = 85,064.87/x
  3. Step 3: Cross multiply
    156,684.83x = 216,227.67 × 85,064.87
  4. Step 4: Simplify right side
    156,684.83x = 18,393,378,638.95
  5. Step 5: Solve for x
    x = 18,393,378,638.95/156,684.83
  6. Step 6: Final answer
    x = 117,390.93

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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.