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Finding the Fourth Proportional to 236,609.71, 326,529.12 and 129,187.91

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Solution

The fourth proportional to 236,609.71, 326,529.12 and 129,187.91 is: 178,283.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,609.71 : 326,529.12 = 129,187.91 : x
  2. Step 2: Convert to fraction form
    236,609.71/326,529.12 = 129,187.91/x
  3. Step 3: Cross multiply
    236,609.71x = 326,529.12 × 129,187.91
  4. Step 4: Simplify right side
    236,609.71x = 42,183,615,867.72
  5. Step 5: Solve for x
    x = 42,183,615,867.72/236,609.71
  6. Step 6: Final answer
    x = 178,283.54

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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.