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Finding the Fourth Proportional to 171,846.90, 257,551.65 and 82,908.90

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Solution

The fourth proportional to 171,846.90, 257,551.65 and 82,908.90 is: 124,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,846.90 : 257,551.65 = 82,908.90 : x
  2. Step 2: Convert to fraction form
    171,846.90/257,551.65 = 82,908.90/x
  3. Step 3: Cross multiply
    171,846.90x = 257,551.65 × 82,908.90
  4. Step 4: Simplify right side
    171,846.90x = 21,353,323,994.69
  5. Step 5: Solve for x
    x = 21,353,323,994.69/171,846.90
  6. Step 6: Final answer
    x = 124,257.84

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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.