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Finding the Fourth Proportional to 156,063.92, 215,367.66 and 84,443.62

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Solution

The fourth proportional to 156,063.92, 215,367.66 and 84,443.62 is: 116,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,063.92 : 215,367.66 = 84,443.62 : x
  2. Step 2: Convert to fraction form
    156,063.92/215,367.66 = 84,443.62/x
  3. Step 3: Cross multiply
    156,063.92x = 215,367.66 × 84,443.62
  4. Step 4: Simplify right side
    156,063.92x = 18,186,424,841.33
  5. Step 5: Solve for x
    x = 18,186,424,841.33/156,063.92
  6. Step 6: Final answer
    x = 116,531.90

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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.