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Finding the Fourth Proportional to 65,801.21, 90,805.41 and 35,586.57

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Solution

The fourth proportional to 65,801.21, 90,805.41 and 35,586.57 is: 49,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,801.21 : 90,805.41 = 35,586.57 : x
  2. Step 2: Convert to fraction form
    65,801.21/90,805.41 = 35,586.57/x
  3. Step 3: Cross multiply
    65,801.21x = 90,805.41 × 35,586.57
  4. Step 4: Simplify right side
    65,801.21x = 3,231,453,079.34
  5. Step 5: Solve for x
    x = 3,231,453,079.34/65,801.21
  6. Step 6: Final answer
    x = 49,109.33

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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.