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Finding the Fourth Proportional to 69,076.08, 103,614.13 and 19,156.18

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Solution

The fourth proportional to 69,076.08, 103,614.13 and 19,156.18 is: 28,734.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,076.08 : 103,614.13 = 19,156.18 : x
  2. Step 2: Convert to fraction form
    69,076.08/103,614.13 = 19,156.18/x
  3. Step 3: Cross multiply
    69,076.08x = 103,614.13 × 19,156.18
  4. Step 4: Simplify right side
    69,076.08x = 1,984,850,924.82
  5. Step 5: Solve for x
    x = 1,984,850,924.82/69,076.08
  6. Step 6: Final answer
    x = 28,734.27

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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.