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Finding the Fourth Proportional to 67,691.90, 101,509.91 and 25,564.82

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Solution

The fourth proportional to 67,691.90, 101,509.91 and 25,564.82 is: 38,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,691.90 : 101,509.91 = 25,564.82 : x
  2. Step 2: Convert to fraction form
    67,691.90/101,509.91 = 25,564.82/x
  3. Step 3: Cross multiply
    67,691.90x = 101,509.91 × 25,564.82
  4. Step 4: Simplify right side
    67,691.90x = 2,595,081,941.99
  5. Step 5: Solve for x
    x = 2,595,081,941.99/67,691.90
  6. Step 6: Final answer
    x = 38,336.67

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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.