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Finding the Fourth Proportional to 156,801.66, 216,388.13 and 85,182.81

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Solution

The fourth proportional to 156,801.66, 216,388.13 and 85,182.81 is: 117,553.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,801.66 : 216,388.13 = 85,182.81 : x
  2. Step 2: Convert to fraction form
    156,801.66/216,388.13 = 85,182.81/x
  3. Step 3: Cross multiply
    156,801.66x = 216,388.13 × 85,182.81
  4. Step 4: Simplify right side
    156,801.66x = 18,432,548,964.05
  5. Step 5: Solve for x
    x = 18,432,548,964.05/156,801.66
  6. Step 6: Final answer
    x = 117,553.28

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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.