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Finding the Fourth Proportional to 13,022.79, 17,971.44 and 7,054.46

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Solution

The fourth proportional to 13,022.79, 17,971.44 and 7,054.46 is: 9,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,022.79 : 17,971.44 = 7,054.46 : x
  2. Step 2: Convert to fraction form
    13,022.79/17,971.44 = 7,054.46/x
  3. Step 3: Cross multiply
    13,022.79x = 17,971.44 × 7,054.46
  4. Step 4: Simplify right side
    13,022.79x = 126,778,755.70
  5. Step 5: Solve for x
    x = 126,778,755.70/13,022.79
  6. Step 6: Final answer
    x = 9,735.15

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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.