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Finding the Fourth Proportional to 69,980.40, 104,853.60 and 49,166.64

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Solution

The fourth proportional to 69,980.40, 104,853.60 and 49,166.64 is: 73,667.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,980.40 : 104,853.60 = 49,166.64 : x
  2. Step 2: Convert to fraction form
    69,980.40/104,853.60 = 49,166.64/x
  3. Step 3: Cross multiply
    69,980.40x = 104,853.60 × 49,166.64
  4. Step 4: Simplify right side
    69,980.40x = 5,155,299,203.90
  5. Step 5: Solve for x
    x = 5,155,299,203.90/69,980.40
  6. Step 6: Final answer
    x = 73,667.76

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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.