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Finding the Fourth Proportional to 65,786.22, 90,784.80 and 35,571.33

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Solution

The fourth proportional to 65,786.22, 90,784.80 and 35,571.33 is: 49,088.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,786.22 : 90,784.80 = 35,571.33 : x
  2. Step 2: Convert to fraction form
    65,786.22/90,784.80 = 35,571.33/x
  3. Step 3: Cross multiply
    65,786.22x = 90,784.80 × 35,571.33
  4. Step 4: Simplify right side
    65,786.22x = 3,229,336,079.78
  5. Step 5: Solve for x
    x = 3,229,336,079.78/65,786.22
  6. Step 6: Final answer
    x = 49,088.34

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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.