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Finding the Fourth Proportional to 113,809.68, 170,790.72 and 47,249.88

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Solution

The fourth proportional to 113,809.68, 170,790.72 and 47,249.88 is: 70,906.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,809.68 : 170,790.72 = 47,249.88 : x
  2. Step 2: Convert to fraction form
    113,809.68/170,790.72 = 47,249.88/x
  3. Step 3: Cross multiply
    113,809.68x = 170,790.72 × 47,249.88
  4. Step 4: Simplify right side
    113,809.68x = 8,069,841,025.11
  5. Step 5: Solve for x
    x = 8,069,841,025.11/113,809.68
  6. Step 6: Final answer
    x = 70,906.46

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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.