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Finding the Fourth Proportional to 18,107.70, 27,153.45 and 7,010.70

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Solution

The fourth proportional to 18,107.70, 27,153.45 and 7,010.70 is: 10,512.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,107.70 : 27,153.45 = 7,010.70 : x
  2. Step 2: Convert to fraction form
    18,107.70/27,153.45 = 7,010.70/x
  3. Step 3: Cross multiply
    18,107.70x = 27,153.45 × 7,010.70
  4. Step 4: Simplify right side
    18,107.70x = 190,364,691.92
  5. Step 5: Solve for x
    x = 190,364,691.92/18,107.70
  6. Step 6: Final answer
    x = 10,512.91

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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.