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Finding the Fourth Proportional to 395,886.24, 593,862.24 and 129,640.96

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Solution

The fourth proportional to 395,886.24, 593,862.24 and 129,640.96 is: 194,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,886.24 : 593,862.24 = 129,640.96 : x
  2. Step 2: Convert to fraction form
    395,886.24/593,862.24 = 129,640.96/x
  3. Step 3: Cross multiply
    395,886.24x = 593,862.24 × 129,640.96
  4. Step 4: Simplify right side
    395,886.24x = 76,988,870,901.35
  5. Step 5: Solve for x
    x = 76,988,870,901.35/395,886.24
  6. Step 6: Final answer
    x = 194,472.21

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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.