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Finding the Fourth Proportional to 47,163.58, 70,745.92 and 18,707.47

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Solution

The fourth proportional to 47,163.58, 70,745.92 and 18,707.47 is: 28,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,163.58 : 70,745.92 = 18,707.47 : x
  2. Step 2: Convert to fraction form
    47,163.58/70,745.92 = 18,707.47/x
  3. Step 3: Cross multiply
    47,163.58x = 70,745.92 × 18,707.47
  4. Step 4: Simplify right side
    47,163.58x = 1,323,477,176.02
  5. Step 5: Solve for x
    x = 1,323,477,176.02/47,163.58
  6. Step 6: Final answer
    x = 28,061.42

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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.