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Finding the Fourth Proportional to 69,058.48, 103,592.94 and 19,138.00

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Solution

The fourth proportional to 69,058.48, 103,592.94 and 19,138.00 is: 28,708.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,058.48 : 103,592.94 = 19,138.00 : x
  2. Step 2: Convert to fraction form
    69,058.48/103,592.94 = 19,138.00/x
  3. Step 3: Cross multiply
    69,058.48x = 103,592.94 × 19,138.00
  4. Step 4: Simplify right side
    69,058.48x = 1,982,561,072.07
  5. Step 5: Solve for x
    x = 1,982,561,072.07/69,058.48
  6. Step 6: Final answer
    x = 28,708.44

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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.