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Finding the Fourth Proportional to 264,700.08, 396,963.72 and 87,165.36

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Solution

The fourth proportional to 264,700.08, 396,963.72 and 87,165.36 is: 130,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,700.08 : 396,963.72 = 87,165.36 : x
  2. Step 2: Convert to fraction form
    264,700.08/396,963.72 = 87,165.36/x
  3. Step 3: Cross multiply
    264,700.08x = 396,963.72 × 87,165.36
  4. Step 4: Simplify right side
    264,700.08x = 34,601,485,560.74
  5. Step 5: Solve for x
    x = 34,601,485,560.74/264,700.08
  6. Step 6: Final answer
    x = 130,719.59

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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.