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Finding the Fourth Proportional to 216,036.70, 324,443.85 and 156,939.10

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Solution

The fourth proportional to 216,036.70, 324,443.85 and 156,939.10 is: 235,691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,036.70 : 324,443.85 = 156,939.10 : x
  2. Step 2: Convert to fraction form
    216,036.70/324,443.85 = 156,939.10/x
  3. Step 3: Cross multiply
    216,036.70x = 324,443.85 × 156,939.10
  4. Step 4: Simplify right side
    216,036.70x = 50,917,925,819.54
  5. Step 5: Solve for x
    x = 50,917,925,819.54/216,036.70
  6. Step 6: Final answer
    x = 235,691.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.