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Finding the Fourth Proportional to 69,495.52, 104,241.76 and 16,905.28

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Solution

The fourth proportional to 69,495.52, 104,241.76 and 16,905.28 is: 25,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,495.52 : 104,241.76 = 16,905.28 : x
  2. Step 2: Convert to fraction form
    69,495.52/104,241.76 = 16,905.28/x
  3. Step 3: Cross multiply
    69,495.52x = 104,241.76 × 16,905.28
  4. Step 4: Simplify right side
    69,495.52x = 1,762,236,140.49
  5. Step 5: Solve for x
    x = 1,762,236,140.49/69,495.52
  6. Step 6: Final answer
    x = 25,357.55

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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.