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Finding the Fourth Proportional to 424,061.20, 636,383.40 and 174,743.20

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Solution

The fourth proportional to 424,061.20, 636,383.40 and 174,743.20 is: 262,234.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,061.20 : 636,383.40 = 174,743.20 : x
  2. Step 2: Convert to fraction form
    424,061.20/636,383.40 = 174,743.20/x
  3. Step 3: Cross multiply
    424,061.20x = 636,383.40 × 174,743.20
  4. Step 4: Simplify right side
    424,061.20x = 111,203,671,742.88
  5. Step 5: Solve for x
    x = 111,203,671,742.88/424,061.20
  6. Step 6: Final answer
    x = 262,234.96

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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.