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Finding the Fourth Proportional to 156,626.10, 216,144.15 and 85,006.11

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Solution

The fourth proportional to 156,626.10, 216,144.15 and 85,006.11 is: 117,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,626.10 : 216,144.15 = 85,006.11 : x
  2. Step 2: Convert to fraction form
    156,626.10/216,144.15 = 85,006.11/x
  3. Step 3: Cross multiply
    156,626.10x = 216,144.15 × 85,006.11
  4. Step 4: Simplify right side
    156,626.10x = 18,373,573,390.76
  5. Step 5: Solve for x
    x = 18,373,573,390.76/156,626.10
  6. Step 6: Final answer
    x = 117,308.50

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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.