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Finding the Fourth Proportional to 262,486.66, 393,787.41 and 85,011.61

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Solution

The fourth proportional to 262,486.66, 393,787.41 and 85,011.61 is: 127,536.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,486.66 : 393,787.41 = 85,011.61 : x
  2. Step 2: Convert to fraction form
    262,486.66/393,787.41 = 85,011.61/x
  3. Step 3: Cross multiply
    262,486.66x = 393,787.41 × 85,011.61
  4. Step 4: Simplify right side
    262,486.66x = 33,476,501,721.83
  5. Step 5: Solve for x
    x = 33,476,501,721.83/262,486.66
  6. Step 6: Final answer
    x = 127,536.01

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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.