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Finding the Fourth Proportional to 367,009.10, 550,513.65 and 260,720.90

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Solution

The fourth proportional to 367,009.10, 550,513.65 and 260,720.90 is: 391,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,009.10 : 550,513.65 = 260,720.90 : x
  2. Step 2: Convert to fraction form
    367,009.10/550,513.65 = 260,720.90/x
  3. Step 3: Cross multiply
    367,009.10x = 550,513.65 × 260,720.90
  4. Step 4: Simplify right side
    367,009.10x = 143,530,414,290.29
  5. Step 5: Solve for x
    x = 143,530,414,290.29/367,009.10
  6. Step 6: Final answer
    x = 391,081.35

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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.