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Finding the Fourth Proportional to 171,480.90, 236,652.21 and 103,496.88

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Solution

The fourth proportional to 171,480.90, 236,652.21 and 103,496.88 is: 142,830.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,480.90 : 236,652.21 = 103,496.88 : x
  2. Step 2: Convert to fraction form
    171,480.90/236,652.21 = 103,496.88/x
  3. Step 3: Cross multiply
    171,480.90x = 236,652.21 × 103,496.88
  4. Step 4: Simplify right side
    171,480.90x = 24,492,765,380.10
  5. Step 5: Solve for x
    x = 24,492,765,380.10/171,480.90
  6. Step 6: Final answer
    x = 142,830.87

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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.