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Finding the Fourth Proportional to 253,562.76, 379,740.36 and 146,721.56

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Solution

The fourth proportional to 253,562.76, 379,740.36 and 146,721.56 is: 219,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,562.76 : 379,740.36 = 146,721.56 : x
  2. Step 2: Convert to fraction form
    253,562.76/379,740.36 = 146,721.56/x
  3. Step 3: Cross multiply
    253,562.76x = 379,740.36 × 146,721.56
  4. Step 4: Simplify right side
    253,562.76x = 55,716,096,115.46
  5. Step 5: Solve for x
    x = 55,716,096,115.46/253,562.76
  6. Step 6: Final answer
    x = 219,732.96

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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.