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Finding the Fourth Proportional to 223,407.82, 335,006.44 and 81,152.81

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Solution

The fourth proportional to 223,407.82, 335,006.44 and 81,152.81 is: 121,690.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,407.82 : 335,006.44 = 81,152.81 : x
  2. Step 2: Convert to fraction form
    223,407.82/335,006.44 = 81,152.81/x
  3. Step 3: Cross multiply
    223,407.82x = 335,006.44 × 81,152.81
  4. Step 4: Simplify right side
    223,407.82x = 27,186,713,974.10
  5. Step 5: Solve for x
    x = 27,186,713,974.10/223,407.82
  6. Step 6: Final answer
    x = 121,690.97

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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.