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Finding the Fourth Proportional to 121,231.86, 181,862.88 and 41,263.70

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Solution

The fourth proportional to 121,231.86, 181,862.88 and 41,263.70 is: 61,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,231.86 : 181,862.88 = 41,263.70 : x
  2. Step 2: Convert to fraction form
    121,231.86/181,862.88 = 41,263.70/x
  3. Step 3: Cross multiply
    121,231.86x = 181,862.88 × 41,263.70
  4. Step 4: Simplify right side
    121,231.86x = 7,504,334,412.14
  5. Step 5: Solve for x
    x = 7,504,334,412.14/121,231.86
  6. Step 6: Final answer
    x = 61,900.68

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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.