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Finding the Fourth Proportional to 374,091.43, 516,061.21 and 221,055.59

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Solution

The fourth proportional to 374,091.43, 516,061.21 and 221,055.59 is: 304,947.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,091.43 : 516,061.21 = 221,055.59 : x
  2. Step 2: Convert to fraction form
    374,091.43/516,061.21 = 221,055.59/x
  3. Step 3: Cross multiply
    374,091.43x = 516,061.21 × 221,055.59
  4. Step 4: Simplify right side
    374,091.43x = 114,078,215,252.66
  5. Step 5: Solve for x
    x = 114,078,215,252.66/374,091.43
  6. Step 6: Final answer
    x = 304,947.42

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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.