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Finding the Fourth Proportional to 362,117.20, 543,175.80 and 268,805.20

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Solution

The fourth proportional to 362,117.20, 543,175.80 and 268,805.20 is: 403,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,117.20 : 543,175.80 = 268,805.20 : x
  2. Step 2: Convert to fraction form
    362,117.20/543,175.80 = 268,805.20/x
  3. Step 3: Cross multiply
    362,117.20x = 543,175.80 × 268,805.20
  4. Step 4: Simplify right side
    362,117.20x = 146,008,479,554.16
  5. Step 5: Solve for x
    x = 146,008,479,554.16/362,117.20
  6. Step 6: Final answer
    x = 403,207.80

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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.