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Finding the Fourth Proportional to 365,720.10, 548,438.34 and 125,788.38

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Solution

The fourth proportional to 365,720.10, 548,438.34 and 125,788.38 is: 188,633.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,720.10 : 548,438.34 = 125,788.38 : x
  2. Step 2: Convert to fraction form
    365,720.10/548,438.34 = 125,788.38/x
  3. Step 3: Cross multiply
    365,720.10x = 548,438.34 × 125,788.38
  4. Step 4: Simplify right side
    365,720.10x = 68,987,168,733.55
  5. Step 5: Solve for x
    x = 68,987,168,733.55/365,720.10
  6. Step 6: Final answer
    x = 188,633.79

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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.