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Finding the Fourth Proportional to 156,951.16, 216,594.42 and 85,329.64

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Solution

The fourth proportional to 156,951.16, 216,594.42 and 85,329.64 is: 117,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,951.16 : 216,594.42 = 85,329.64 : x
  2. Step 2: Convert to fraction form
    156,951.16/216,594.42 = 85,329.64/x
  3. Step 3: Cross multiply
    156,951.16x = 216,594.42 × 85,329.64
  4. Step 4: Simplify right side
    156,951.16x = 18,481,923,884.61
  5. Step 5: Solve for x
    x = 18,481,923,884.61/156,951.16
  6. Step 6: Final answer
    x = 117,755.89

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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.