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Finding the Fourth Proportional to 332,786.40, 499,244.40 and 143,246.40

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Solution

The fourth proportional to 332,786.40, 499,244.40 and 143,246.40 is: 214,897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,786.40 : 499,244.40 = 143,246.40 : x
  2. Step 2: Convert to fraction form
    332,786.40/499,244.40 = 143,246.40/x
  3. Step 3: Cross multiply
    332,786.40x = 499,244.40 × 143,246.40
  4. Step 4: Simplify right side
    332,786.40x = 71,514,963,020.16
  5. Step 5: Solve for x
    x = 71,514,963,020.16/332,786.40
  6. Step 6: Final answer
    x = 214,897.49

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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.