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Finding the Fourth Proportional to 156,212.84, 215,573.41 and 84,592.64

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Solution

The fourth proportional to 156,212.84, 215,573.41 and 84,592.64 is: 116,737.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,212.84 : 215,573.41 = 84,592.64 : x
  2. Step 2: Convert to fraction form
    156,212.84/215,573.41 = 84,592.64/x
  3. Step 3: Cross multiply
    156,212.84x = 215,573.41 × 84,592.64
  4. Step 4: Simplify right side
    156,212.84x = 18,235,923,865.70
  5. Step 5: Solve for x
    x = 18,235,923,865.70/156,212.84
  6. Step 6: Final answer
    x = 116,737.68

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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.