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Finding the Fourth Proportional to 334,586.40, 501,871.39 and 81,864.88

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Solution

The fourth proportional to 334,586.40, 501,871.39 and 81,864.88 is: 122,795.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,586.40 : 501,871.39 = 81,864.88 : x
  2. Step 2: Convert to fraction form
    334,586.40/501,871.39 = 81,864.88/x
  3. Step 3: Cross multiply
    334,586.40x = 501,871.39 × 81,864.88
  4. Step 4: Simplify right side
    334,586.40x = 41,085,640,118.93
  5. Step 5: Solve for x
    x = 41,085,640,118.93/334,586.40
  6. Step 6: Final answer
    x = 122,795.31

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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.