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Finding the Fourth Proportional to 156,646.84, 216,166.84 and 85,025.33

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Solution

The fourth proportional to 156,646.84, 216,166.84 and 85,025.33 is: 117,331.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,646.84 : 216,166.84 = 85,025.33 : x
  2. Step 2: Convert to fraction form
    156,646.84/216,166.84 = 85,025.33/x
  3. Step 3: Cross multiply
    156,646.84x = 216,166.84 × 85,025.33
  4. Step 4: Simplify right side
    156,646.84x = 18,379,656,906.06
  5. Step 5: Solve for x
    x = 18,379,656,906.06/156,646.84
  6. Step 6: Final answer
    x = 117,331.81

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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.