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Finding the Fourth Proportional to 405,576.60, 608,161.86 and 125,057.40

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Solution

The fourth proportional to 405,576.60, 608,161.86 and 125,057.40 is: 187,523.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,576.60 : 608,161.86 = 125,057.40 : x
  2. Step 2: Convert to fraction form
    405,576.60/608,161.86 = 125,057.40/x
  3. Step 3: Cross multiply
    405,576.60x = 608,161.86 × 125,057.40
  4. Step 4: Simplify right side
    405,576.60x = 76,055,140,990.76
  5. Step 5: Solve for x
    x = 76,055,140,990.76/405,576.60
  6. Step 6: Final answer
    x = 187,523.49

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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.