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Finding the Fourth Proportional to 171,648.72, 236,830.76 and 103,611.92

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Solution

The fourth proportional to 171,648.72, 236,830.76 and 103,611.92 is: 142,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,648.72 : 236,830.76 = 103,611.92 : x
  2. Step 2: Convert to fraction form
    171,648.72/236,830.76 = 103,611.92/x
  3. Step 3: Cross multiply
    171,648.72x = 236,830.76 × 103,611.92
  4. Step 4: Simplify right side
    171,648.72x = 24,538,489,758.66
  5. Step 5: Solve for x
    x = 24,538,489,758.66/171,648.72
  6. Step 6: Final answer
    x = 142,957.60

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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.