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Finding the Fourth Proportional to 65,999.97, 91,081.14 and 35,786.31

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Solution

The fourth proportional to 65,999.97, 91,081.14 and 35,786.31 is: 49,385.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,999.97 : 91,081.14 = 35,786.31 : x
  2. Step 2: Convert to fraction form
    65,999.97/91,081.14 = 35,786.31/x
  3. Step 3: Cross multiply
    65,999.97x = 91,081.14 × 35,786.31
  4. Step 4: Simplify right side
    65,999.97x = 3,259,457,911.19
  5. Step 5: Solve for x
    x = 3,259,457,911.19/65,999.97
  6. Step 6: Final answer
    x = 49,385.75

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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.