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Finding the Fourth Proportional to 17,160.80, 25,750.01 and 12,999.42

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Solution

The fourth proportional to 17,160.80, 25,750.01 and 12,999.42 is: 19,505.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,160.80 : 25,750.01 = 12,999.42 : x
  2. Step 2: Convert to fraction form
    17,160.80/25,750.01 = 12,999.42/x
  3. Step 3: Cross multiply
    17,160.80x = 25,750.01 × 12,999.42
  4. Step 4: Simplify right side
    17,160.80x = 334,735,227.49
  5. Step 5: Solve for x
    x = 334,735,227.49/17,160.80
  6. Step 6: Final answer
    x = 19,505.81

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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.