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Finding the Fourth Proportional to 110,058.78, 165,153.78 and 39,928.98

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Solution

The fourth proportional to 110,058.78, 165,153.78 and 39,928.98 is: 59,917.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,058.78 : 165,153.78 = 39,928.98 : x
  2. Step 2: Convert to fraction form
    110,058.78/165,153.78 = 39,928.98/x
  3. Step 3: Cross multiply
    110,058.78x = 165,153.78 × 39,928.98
  4. Step 4: Simplify right side
    110,058.78x = 6,594,421,978.54
  5. Step 5: Solve for x
    x = 6,594,421,978.54/110,058.78
  6. Step 6: Final answer
    x = 59,917.27

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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.