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Finding the Fourth Proportional to 405,711.56, 608,917.25 and 156,568.52

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Solution

The fourth proportional to 405,711.56, 608,917.25 and 156,568.52 is: 234,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,711.56 : 608,917.25 = 156,568.52 : x
  2. Step 2: Convert to fraction form
    405,711.56/608,917.25 = 156,568.52/x
  3. Step 3: Cross multiply
    405,711.56x = 608,917.25 × 156,568.52
  4. Step 4: Simplify right side
    405,711.56x = 95,337,269,981.81
  5. Step 5: Solve for x
    x = 95,337,269,981.81/405,711.56
  6. Step 6: Final answer
    x = 234,987.81

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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.