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Finding the Fourth Proportional to 172,028.70, 258,043.05 and 136,599.30

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Solution

The fourth proportional to 172,028.70, 258,043.05 and 136,599.30 is: 204,898.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,028.70 : 258,043.05 = 136,599.30 : x
  2. Step 2: Convert to fraction form
    172,028.70/258,043.05 = 136,599.30/x
  3. Step 3: Cross multiply
    172,028.70x = 258,043.05 × 136,599.30
  4. Step 4: Simplify right side
    172,028.70x = 35,248,499,999.87
  5. Step 5: Solve for x
    x = 35,248,499,999.87/172,028.70
  6. Step 6: Final answer
    x = 204,898.95

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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.