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Finding the Fourth Proportional to 223,622.22, 308,589.75 and 121,647.81

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Solution

The fourth proportional to 223,622.22, 308,589.75 and 121,647.81 is: 167,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,622.22 : 308,589.75 = 121,647.81 : x
  2. Step 2: Convert to fraction form
    223,622.22/308,589.75 = 121,647.81/x
  3. Step 3: Cross multiply
    223,622.22x = 308,589.75 × 121,647.81
  4. Step 4: Simplify right side
    223,622.22x = 37,539,267,275.95
  5. Step 5: Solve for x
    x = 37,539,267,275.95/223,622.22
  6. Step 6: Final answer
    x = 167,869.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.