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Finding the Fourth Proportional to 113,370.40, 169,861.20 and 73,907.20

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Solution

The fourth proportional to 113,370.40, 169,861.20 and 73,907.20 is: 110,734.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,370.40 : 169,861.20 = 73,907.20 : x
  2. Step 2: Convert to fraction form
    113,370.40/169,861.20 = 73,907.20/x
  3. Step 3: Cross multiply
    113,370.40x = 169,861.20 × 73,907.20
  4. Step 4: Simplify right side
    113,370.40x = 12,553,965,680.64
  5. Step 5: Solve for x
    x = 12,553,965,680.64/113,370.40
  6. Step 6: Final answer
    x = 110,734.07

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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.