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Finding the Fourth Proportional to 38,293.48, 57,440.22 and 21,661.48

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Solution

The fourth proportional to 38,293.48, 57,440.22 and 21,661.48 is: 32,492.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,293.48 : 57,440.22 = 21,661.48 : x
  2. Step 2: Convert to fraction form
    38,293.48/57,440.22 = 21,661.48/x
  3. Step 3: Cross multiply
    38,293.48x = 57,440.22 × 21,661.48
  4. Step 4: Simplify right side
    38,293.48x = 1,244,240,176.73
  5. Step 5: Solve for x
    x = 1,244,240,176.73/38,293.48
  6. Step 6: Final answer
    x = 32,492.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.