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Finding the Fourth Proportional to 666,203.87, 999,686.71 and 281,922.46

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Solution

The fourth proportional to 666,203.87, 999,686.71 and 281,922.46 is: 423,044.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,203.87 : 999,686.71 = 281,922.46 : x
  2. Step 2: Convert to fraction form
    666,203.87/999,686.71 = 281,922.46/x
  3. Step 3: Cross multiply
    666,203.87x = 999,686.71 × 281,922.46
  4. Step 4: Simplify right side
    666,203.87x = 281,834,134,365.69
  5. Step 5: Solve for x
    x = 281,834,134,365.69/666,203.87
  6. Step 6: Final answer
    x = 423,044.88

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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.