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Finding the Fourth Proportional to 65,858.88, 90,885.38 and 35,644.26

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Solution

The fourth proportional to 65,858.88, 90,885.38 and 35,644.26 is: 49,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,858.88 : 90,885.38 = 35,644.26 : x
  2. Step 2: Convert to fraction form
    65,858.88/90,885.38 = 35,644.26/x
  3. Step 3: Cross multiply
    65,858.88x = 90,885.38 × 35,644.26
  4. Step 4: Simplify right side
    65,858.88x = 3,239,542,114.92
  5. Step 5: Solve for x
    x = 3,239,542,114.92/65,858.88
  6. Step 6: Final answer
    x = 49,189.15

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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.