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Finding the Fourth Proportional to 65,910.21, 90,955.62 and 35,694.84

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Solution

The fourth proportional to 65,910.21, 90,955.62 and 35,694.84 is: 49,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,910.21 : 90,955.62 = 35,694.84 : x
  2. Step 2: Convert to fraction form
    65,910.21/90,955.62 = 35,694.84/x
  3. Step 3: Cross multiply
    65,910.21x = 90,955.62 × 35,694.84
  4. Step 4: Simplify right side
    65,910.21x = 3,246,646,303.00
  5. Step 5: Solve for x
    x = 3,246,646,303.00/65,910.21
  6. Step 6: Final answer
    x = 49,258.62

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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.