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Finding the Fourth Proportional to 121,107.98, 181,399.41 and 58,647.50

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Solution

The fourth proportional to 121,107.98, 181,399.41 and 58,647.50 is: 87,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,107.98 : 181,399.41 = 58,647.50 : x
  2. Step 2: Convert to fraction form
    121,107.98/181,399.41 = 58,647.50/x
  3. Step 3: Cross multiply
    121,107.98x = 181,399.41 × 58,647.50
  4. Step 4: Simplify right side
    121,107.98x = 10,638,621,897.98
  5. Step 5: Solve for x
    x = 10,638,621,897.98/121,107.98
  6. Step 6: Final answer
    x = 87,844.10

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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.