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Finding the Fourth Proportional to 156,641.96, 216,160.11 and 85,020.46

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Solution

The fourth proportional to 156,641.96, 216,160.11 and 85,020.46 is: 117,325.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,641.96 : 216,160.11 = 85,020.46 : x
  2. Step 2: Convert to fraction form
    156,641.96/216,160.11 = 85,020.46/x
  3. Step 3: Cross multiply
    156,641.96x = 216,160.11 × 85,020.46
  4. Step 4: Simplify right side
    156,641.96x = 18,378,031,985.85
  5. Step 5: Solve for x
    x = 18,378,031,985.85/156,641.96
  6. Step 6: Final answer
    x = 117,325.09

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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.