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Finding the Fourth Proportional to 217,879.68, 326,819.52 and 190,508.16

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Solution

The fourth proportional to 217,879.68, 326,819.52 and 190,508.16 is: 285,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,879.68 : 326,819.52 = 190,508.16 : x
  2. Step 2: Convert to fraction form
    217,879.68/326,819.52 = 190,508.16/x
  3. Step 3: Cross multiply
    217,879.68x = 326,819.52 × 190,508.16
  4. Step 4: Simplify right side
    217,879.68x = 62,261,785,407.28
  5. Step 5: Solve for x
    x = 62,261,785,407.28/217,879.68
  6. Step 6: Final answer
    x = 285,762.24

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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.