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Finding the Fourth Proportional to 65,911.37, 90,956.57 and 35,696.45

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Solution

The fourth proportional to 65,911.37, 90,956.57 and 35,696.45 is: 49,260.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.37 : 90,956.57 = 35,696.45 : x
  2. Step 2: Convert to fraction form
    65,911.37/90,956.57 = 35,696.45/x
  3. Step 3: Cross multiply
    65,911.37x = 90,956.57 × 35,696.45
  4. Step 4: Simplify right side
    65,911.37x = 3,246,826,019.91
  5. Step 5: Solve for x
    x = 3,246,826,019.91/65,911.37
  6. Step 6: Final answer
    x = 49,260.49

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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.