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Finding the Fourth Proportional to 264,795.20, 397,087.20 and 87,252.80

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Solution

The fourth proportional to 264,795.20, 397,087.20 and 87,252.80 is: 130,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,795.20 : 397,087.20 = 87,252.80 : x
  2. Step 2: Convert to fraction form
    264,795.20/397,087.20 = 87,252.80/x
  3. Step 3: Cross multiply
    264,795.20x = 397,087.20 × 87,252.80
  4. Step 4: Simplify right side
    264,795.20x = 34,646,970,044.16
  5. Step 5: Solve for x
    x = 34,646,970,044.16/264,795.20
  6. Step 6: Final answer
    x = 130,844.40

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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.