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Finding the Fourth Proportional to 65,894.92, 90,935.16 and 35,680.60

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Solution

The fourth proportional to 65,894.92, 90,935.16 and 35,680.60 is: 49,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.92 : 90,935.16 = 35,680.60 : x
  2. Step 2: Convert to fraction form
    65,894.92/90,935.16 = 35,680.60/x
  3. Step 3: Cross multiply
    65,894.92x = 90,935.16 × 35,680.60
  4. Step 4: Simplify right side
    65,894.92x = 3,244,621,069.90
  5. Step 5: Solve for x
    x = 3,244,621,069.90/65,894.92
  6. Step 6: Final answer
    x = 49,239.32

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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.