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Finding the Fourth Proportional to 115,458.95, 173,058.91 and 75,554.71

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Solution

The fourth proportional to 115,458.95, 173,058.91 and 75,554.71 is: 113,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,458.95 : 173,058.91 = 75,554.71 : x
  2. Step 2: Convert to fraction form
    115,458.95/173,058.91 = 75,554.71/x
  3. Step 3: Cross multiply
    115,458.95x = 173,058.91 × 75,554.71
  4. Step 4: Simplify right side
    115,458.95x = 13,075,415,757.97
  5. Step 5: Solve for x
    x = 13,075,415,757.97/115,458.95
  6. Step 6: Final answer
    x = 113,247.31

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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.