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Finding the Fourth Proportional to 63,612.80, 87,785.76 and 35,317.76

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Solution

The fourth proportional to 63,612.80, 87,785.76 and 35,317.76 is: 48,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,612.80 : 87,785.76 = 35,317.76 : x
  2. Step 2: Convert to fraction form
    63,612.80/87,785.76 = 35,317.76/x
  3. Step 3: Cross multiply
    63,612.80x = 87,785.76 × 35,317.76
  4. Step 4: Simplify right side
    63,612.80x = 3,100,396,403.10
  5. Step 5: Solve for x
    x = 3,100,396,403.10/63,612.80
  6. Step 6: Final answer
    x = 48,738.56

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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.