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Finding the Fourth Proportional to 496,721.78, 745,193.78 and 181,178.69

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Solution

The fourth proportional to 496,721.78, 745,193.78 and 181,178.69 is: 271,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,721.78 : 745,193.78 = 181,178.69 : x
  2. Step 2: Convert to fraction form
    496,721.78/745,193.78 = 181,178.69/x
  3. Step 3: Cross multiply
    496,721.78x = 745,193.78 × 181,178.69
  4. Step 4: Simplify right side
    496,721.78x = 135,013,228,904.11
  5. Step 5: Solve for x
    x = 135,013,228,904.11/496,721.78
  6. Step 6: Final answer
    x = 271,808.55

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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.