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Finding the Fourth Proportional to 65,894.56, 90,934.68 and 35,680.24

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Solution

The fourth proportional to 65,894.56, 90,934.68 and 35,680.24 is: 49,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,894.56 : 90,934.68 = 35,680.24 : x
  2. Step 2: Convert to fraction form
    65,894.56/90,934.68 = 35,680.24/x
  3. Step 3: Cross multiply
    65,894.56x = 90,934.68 × 35,680.24
  4. Step 4: Simplify right side
    65,894.56x = 3,244,571,206.72
  5. Step 5: Solve for x
    x = 3,244,571,206.72/65,894.56
  6. Step 6: Final answer
    x = 49,238.83

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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.