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Finding the Fourth Proportional to 13,702.50, 20,556.99 and 4,468.50

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Solution

The fourth proportional to 13,702.50, 20,556.99 and 4,468.50 is: 6,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,702.50 : 20,556.99 = 4,468.50 : x
  2. Step 2: Convert to fraction form
    13,702.50/20,556.99 = 4,468.50/x
  3. Step 3: Cross multiply
    13,702.50x = 20,556.99 × 4,468.50
  4. Step 4: Simplify right side
    13,702.50x = 91,858,909.82
  5. Step 5: Solve for x
    x = 91,858,909.82/13,702.50
  6. Step 6: Final answer
    x = 6,703.81

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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.