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Finding the Fourth Proportional to 156,667.87, 216,202.10 and 85,047.94

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Solution

The fourth proportional to 156,667.87, 216,202.10 and 85,047.94 is: 117,366.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,667.87 : 216,202.10 = 85,047.94 : x
  2. Step 2: Convert to fraction form
    156,667.87/216,202.10 = 85,047.94/x
  3. Step 3: Cross multiply
    156,667.87x = 216,202.10 × 85,047.94
  4. Step 4: Simplify right side
    156,667.87x = 18,387,541,722.42
  5. Step 5: Solve for x
    x = 18,387,541,722.42/156,667.87
  6. Step 6: Final answer
    x = 117,366.39

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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.