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Finding the Fourth Proportional to 65,086.88, 89,794.22 and 40,873.60

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Solution

The fourth proportional to 65,086.88, 89,794.22 and 40,873.60 is: 56,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,086.88 : 89,794.22 = 40,873.60 : x
  2. Step 2: Convert to fraction form
    65,086.88/89,794.22 = 40,873.60/x
  3. Step 3: Cross multiply
    65,086.88x = 89,794.22 × 40,873.60
  4. Step 4: Simplify right side
    65,086.88x = 3,670,212,601.74
  5. Step 5: Solve for x
    x = 3,670,212,601.74/65,086.88
  6. Step 6: Final answer
    x = 56,389.44

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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.