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Finding the Fourth Proportional to 121,068, 181,573.92 and 46,161.36

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Solution

The fourth proportional to 121,068, 181,573.92 and 46,161.36 is: 69,231.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,068 : 181,573.92 = 46,161.36 : x
  2. Step 2: Convert to fraction form
    121,068/181,573.92 = 46,161.36/x
  3. Step 3: Cross multiply
    121,068x = 181,573.92 × 46,161.36
  4. Step 4: Simplify right side
    121,068x = 8,381,699,087.73
  5. Step 5: Solve for x
    x = 8,381,699,087.73/121,068
  6. Step 6: Final answer
    x = 69,231.33

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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.