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Finding the Fourth Proportional to 395,624.16, 593,472.72 and 129,386.16

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Solution

The fourth proportional to 395,624.16, 593,472.72 and 129,386.16 is: 194,091.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,624.16 : 593,472.72 = 129,386.16 : x
  2. Step 2: Convert to fraction form
    395,624.16/593,472.72 = 129,386.16/x
  3. Step 3: Cross multiply
    395,624.16x = 593,472.72 × 129,386.16
  4. Step 4: Simplify right side
    395,624.16x = 76,787,156,305.56
  5. Step 5: Solve for x
    x = 76,787,156,305.56/395,624.16
  6. Step 6: Final answer
    x = 194,091.17

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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.