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Finding the Fourth Proportional to 172,112.83, 257,795.40 and 83,179.84

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Solution

The fourth proportional to 172,112.83, 257,795.40 and 83,179.84 is: 124,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,112.83 : 257,795.40 = 83,179.84 : x
  2. Step 2: Convert to fraction form
    172,112.83/257,795.40 = 83,179.84/x
  3. Step 3: Cross multiply
    172,112.83x = 257,795.40 × 83,179.84
  4. Step 4: Simplify right side
    172,112.83x = 21,443,380,124.74
  5. Step 5: Solve for x
    x = 21,443,380,124.74/172,112.83
  6. Step 6: Final answer
    x = 124,589.09

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1.5x scale

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.