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Finding the Fourth Proportional to 85,069.56, 127,571.22 and 35,157.72

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Solution

The fourth proportional to 85,069.56, 127,571.22 and 35,157.72 is: 52,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,069.56 : 127,571.22 = 35,157.72 : x
  2. Step 2: Convert to fraction form
    85,069.56/127,571.22 = 35,157.72/x
  3. Step 3: Cross multiply
    85,069.56x = 127,571.22 × 35,157.72
  4. Step 4: Simplify right side
    85,069.56x = 4,485,113,232.82
  5. Step 5: Solve for x
    x = 4,485,113,232.82/85,069.56
  6. Step 6: Final answer
    x = 52,722.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.