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Finding the Fourth Proportional to 714,608.73, 986,161.73 and 392,339.58

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Solution

The fourth proportional to 714,608.73, 986,161.73 and 392,339.58 is: 541,429.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,608.73 : 986,161.73 = 392,339.58 : x
  2. Step 2: Convert to fraction form
    714,608.73/986,161.73 = 392,339.58/x
  3. Step 3: Cross multiply
    714,608.73x = 986,161.73 × 392,339.58
  4. Step 4: Simplify right side
    714,608.73x = 386,910,276,998.58
  5. Step 5: Solve for x
    x = 386,910,276,998.58/714,608.73
  6. Step 6: Final answer
    x = 541,429.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.