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Finding the Fourth Proportional to 69,415.03, 104,122.54 and 16,824.51

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Solution

The fourth proportional to 69,415.03, 104,122.54 and 16,824.51 is: 25,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,415.03 : 104,122.54 = 16,824.51 : x
  2. Step 2: Convert to fraction form
    69,415.03/104,122.54 = 16,824.51/x
  3. Step 3: Cross multiply
    69,415.03x = 104,122.54 × 16,824.51
  4. Step 4: Simplify right side
    69,415.03x = 1,751,810,689.17
  5. Step 5: Solve for x
    x = 1,751,810,689.17/69,415.03
  6. Step 6: Final answer
    x = 25,236.77

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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.