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Finding the Fourth Proportional to 367,078.10, 550,617.15 and 260,789.90

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Solution

The fourth proportional to 367,078.10, 550,617.15 and 260,789.90 is: 391,184.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,078.10 : 550,617.15 = 260,789.90 : x
  2. Step 2: Convert to fraction form
    367,078.10/550,617.15 = 260,789.90/x
  3. Step 3: Cross multiply
    367,078.10x = 550,617.15 × 260,789.90
  4. Step 4: Simplify right side
    367,078.10x = 143,595,391,486.79
  5. Step 5: Solve for x
    x = 143,595,391,486.79/367,078.10
  6. Step 6: Final answer
    x = 391,184.85

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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.