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Finding the Fourth Proportional to 156,708.53, 216,251.71 and 85,086.92

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Solution

The fourth proportional to 156,708.53, 216,251.71 and 85,086.92 is: 117,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,708.53 : 216,251.71 = 85,086.92 : x
  2. Step 2: Convert to fraction form
    156,708.53/216,251.71 = 85,086.92/x
  3. Step 3: Cross multiply
    156,708.53x = 216,251.71 × 85,086.92
  4. Step 4: Simplify right side
    156,708.53x = 18,400,190,441.94
  5. Step 5: Solve for x
    x = 18,400,190,441.94/156,708.53
  6. Step 6: Final answer
    x = 117,416.65

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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.