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Finding the Fourth Proportional to 63,653.57, 87,805.38 and 39,738.72

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Solution

The fourth proportional to 63,653.57, 87,805.38 and 39,738.72 is: 54,816.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,653.57 : 87,805.38 = 39,738.72 : x
  2. Step 2: Convert to fraction form
    63,653.57/87,805.38 = 39,738.72/x
  3. Step 3: Cross multiply
    63,653.57x = 87,805.38 × 39,738.72
  4. Step 4: Simplify right side
    63,653.57x = 3,489,273,559.33
  5. Step 5: Solve for x
    x = 3,489,273,559.33/63,653.57
  6. Step 6: Final answer
    x = 54,816.62

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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.