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Finding the Fourth Proportional to 13,595.32, 20,379.90 and 7,435

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Solution

The fourth proportional to 13,595.32, 20,379.90 and 7,435 is: 11,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.32 : 20,379.90 = 7,435 : x
  2. Step 2: Convert to fraction form
    13,595.32/20,379.90 = 7,435/x
  3. Step 3: Cross multiply
    13,595.32x = 20,379.90 × 7,435
  4. Step 4: Simplify right side
    13,595.32x = 151,524,556.50
  5. Step 5: Solve for x
    x = 151,524,556.50/13,595.32
  6. Step 6: Final answer
    x = 11,145.35

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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.