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Finding the Fourth Proportional to 368,117.20, 552,175.80 and 131,726.80

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Solution

The fourth proportional to 368,117.20, 552,175.80 and 131,726.80 is: 197,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,117.20 : 552,175.80 = 131,726.80 : x
  2. Step 2: Convert to fraction form
    368,117.20/552,175.80 = 131,726.80/x
  3. Step 3: Cross multiply
    368,117.20x = 552,175.80 × 131,726.80
  4. Step 4: Simplify right side
    368,117.20x = 72,736,351,171.44
  5. Step 5: Solve for x
    x = 72,736,351,171.44/368,117.20
  6. Step 6: Final answer
    x = 197,590.20

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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.