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Finding the Fourth Proportional to 156,998.34, 216,659.16 and 85,379.04

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Solution

The fourth proportional to 156,998.34, 216,659.16 and 85,379.04 is: 117,823.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,998.34 : 216,659.16 = 85,379.04 : x
  2. Step 2: Convert to fraction form
    156,998.34/216,659.16 = 85,379.04/x
  3. Step 3: Cross multiply
    156,998.34x = 216,659.16 × 85,379.04
  4. Step 4: Simplify right side
    156,998.34x = 18,498,151,088.01
  5. Step 5: Solve for x
    x = 18,498,151,088.01/156,998.34
  6. Step 6: Final answer
    x = 117,823.86

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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.