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Finding the Fourth Proportional to 38,963.58, 53,767.04 and 21,968.44

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Solution

The fourth proportional to 38,963.58, 53,767.04 and 21,968.44 is: 30,314.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,963.58 : 53,767.04 = 21,968.44 : x
  2. Step 2: Convert to fraction form
    38,963.58/53,767.04 = 21,968.44/x
  3. Step 3: Cross multiply
    38,963.58x = 53,767.04 × 21,968.44
  4. Step 4: Simplify right side
    38,963.58x = 1,181,177,992.22
  5. Step 5: Solve for x
    x = 1,181,177,992.22/38,963.58
  6. Step 6: Final answer
    x = 30,314.92

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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.