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Finding the Fourth Proportional to 156,649.10, 216,179.60 and 85,028.94

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Solution

The fourth proportional to 156,649.10, 216,179.60 and 85,028.94 is: 117,342.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,649.10 : 216,179.60 = 85,028.94 : x
  2. Step 2: Convert to fraction form
    156,649.10/216,179.60 = 85,028.94/x
  3. Step 3: Cross multiply
    156,649.10x = 216,179.60 × 85,028.94
  4. Step 4: Simplify right side
    156,649.10x = 18,381,521,812.48
  5. Step 5: Solve for x
    x = 18,381,521,812.48/156,649.10
  6. Step 6: Final answer
    x = 117,342.02

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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.