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Finding the Fourth Proportional to 156,646.77, 216,172.71 and 85,026.78

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Solution

The fourth proportional to 156,646.77, 216,172.71 and 85,026.78 is: 117,337.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,646.77 : 216,172.71 = 85,026.78 : x
  2. Step 2: Convert to fraction form
    156,646.77/216,172.71 = 85,026.78/x
  3. Step 3: Cross multiply
    156,646.77x = 216,172.71 × 85,026.78
  4. Step 4: Simplify right side
    156,646.77x = 18,380,469,455.17
  5. Step 5: Solve for x
    x = 18,380,469,455.17/156,646.77
  6. Step 6: Final answer
    x = 117,337.05

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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.