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Finding the Fourth Proportional to 65,522.72, 90,392.88 and 41,636.57

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Solution

The fourth proportional to 65,522.72, 90,392.88 and 41,636.57 is: 57,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,522.72 : 90,392.88 = 41,636.57 : x
  2. Step 2: Convert to fraction form
    65,522.72/90,392.88 = 41,636.57/x
  3. Step 3: Cross multiply
    65,522.72x = 90,392.88 × 41,636.57
  4. Step 4: Simplify right side
    65,522.72x = 3,763,649,475.62
  5. Step 5: Solve for x
    x = 3,763,649,475.62/65,522.72
  6. Step 6: Final answer
    x = 57,440.37

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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.