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Finding the Fourth Proportional to 13,003.79, 17,945.15 and 7,035.44

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Solution

The fourth proportional to 13,003.79, 17,945.15 and 7,035.44 is: 9,708.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,003.79 : 17,945.15 = 7,035.44 : x
  2. Step 2: Convert to fraction form
    13,003.79/17,945.15 = 7,035.44/x
  3. Step 3: Cross multiply
    13,003.79x = 17,945.15 × 7,035.44
  4. Step 4: Simplify right side
    13,003.79x = 126,251,901.21
  5. Step 5: Solve for x
    x = 126,251,901.21/13,003.79
  6. Step 6: Final answer
    x = 9,708.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.