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Finding the Fourth Proportional to 69,209.30, 103,668.15 and 69,209.30

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Solution

The fourth proportional to 69,209.30, 103,668.15 and 69,209.30 is: 103,668.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,209.30 : 103,668.15 = 69,209.30 : x
  2. Step 2: Convert to fraction form
    69,209.30/103,668.15 = 69,209.30/x
  3. Step 3: Cross multiply
    69,209.30x = 103,668.15 × 69,209.30
  4. Step 4: Simplify right side
    69,209.30x = 7,174,800,093.80
  5. Step 5: Solve for x
    x = 7,174,800,093.80/69,209.30
  6. Step 6: Final answer
    x = 103,668.15

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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.