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Finding the Fourth Proportional to 156,982.59, 216,640.08 and 85,366.80

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Solution

The fourth proportional to 156,982.59, 216,640.08 and 85,366.80 is: 117,808.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,982.59 : 216,640.08 = 85,366.80 : x
  2. Step 2: Convert to fraction form
    156,982.59/216,640.08 = 85,366.80/x
  3. Step 3: Cross multiply
    156,982.59x = 216,640.08 × 85,366.80
  4. Step 4: Simplify right side
    156,982.59x = 18,493,870,381.34
  5. Step 5: Solve for x
    x = 18,493,870,381.34/156,982.59
  6. Step 6: Final answer
    x = 117,808.42

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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.