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Finding the Fourth Proportional to 123,418.92, 185,058.54 and 39,163.08

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Solution

The fourth proportional to 123,418.92, 185,058.54 and 39,163.08 is: 58,722.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,418.92 : 185,058.54 = 39,163.08 : x
  2. Step 2: Convert to fraction form
    123,418.92/185,058.54 = 39,163.08/x
  3. Step 3: Cross multiply
    123,418.92x = 185,058.54 × 39,163.08
  4. Step 4: Simplify right side
    123,418.92x = 7,247,462,406.70
  5. Step 5: Solve for x
    x = 7,247,462,406.70/123,418.92
  6. Step 6: Final answer
    x = 58,722.46

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1.5x scale

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.