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Finding the Fourth Proportional to 13,595.22, 20,391 and 5,274.50

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Solution

The fourth proportional to 13,595.22, 20,391 and 5,274.50 is: 7,911.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.22 : 20,391 = 5,274.50 : x
  2. Step 2: Convert to fraction form
    13,595.22/20,391 = 5,274.50/x
  3. Step 3: Cross multiply
    13,595.22x = 20,391 × 5,274.50
  4. Step 4: Simplify right side
    13,595.22x = 107,552,329.50
  5. Step 5: Solve for x
    x = 107,552,329.50/13,595.22
  6. Step 6: Final answer
    x = 7,911.04

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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.