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Finding the Fourth Proportional to 19,468.88, 26,835.50 and 15,212.50

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Solution

The fourth proportional to 19,468.88, 26,835.50 and 15,212.50 is: 20,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,468.88 : 26,835.50 = 15,212.50 : x
  2. Step 2: Convert to fraction form
    19,468.88/26,835.50 = 15,212.50/x
  3. Step 3: Cross multiply
    19,468.88x = 26,835.50 × 15,212.50
  4. Step 4: Simplify right side
    19,468.88x = 408,235,043.75
  5. Step 5: Solve for x
    x = 408,235,043.75/19,468.88
  6. Step 6: Final answer
    x = 20,968.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.