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Finding the Fourth Proportional to 387,634.80, 581,020.20 and 150,898.80

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Solution

The fourth proportional to 387,634.80, 581,020.20 and 150,898.80 is: 226,180.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,634.80 : 581,020.20 = 150,898.80 : x
  2. Step 2: Convert to fraction form
    387,634.80/581,020.20 = 150,898.80/x
  3. Step 3: Cross multiply
    387,634.80x = 581,020.20 × 150,898.80
  4. Step 4: Simplify right side
    387,634.80x = 87,675,250,955.76
  5. Step 5: Solve for x
    x = 87,675,250,955.76/387,634.80
  6. Step 6: Final answer
    x = 226,180.03

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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.