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Finding the Fourth Proportional to 264,226.80, 396,388.20 and 86,684.40

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Solution

The fourth proportional to 264,226.80, 396,388.20 and 86,684.40 is: 130,042.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,226.80 : 396,388.20 = 86,684.40 : x
  2. Step 2: Convert to fraction form
    264,226.80/396,388.20 = 86,684.40/x
  3. Step 3: Cross multiply
    264,226.80x = 396,388.20 × 86,684.40
  4. Step 4: Simplify right side
    264,226.80x = 34,360,673,284.08
  5. Step 5: Solve for x
    x = 34,360,673,284.08/264,226.80
  6. Step 6: Final answer
    x = 130,042.35

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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.