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Finding the Fourth Proportional to 404,970.81, 558,865.08 and 223,682.28

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Solution

The fourth proportional to 404,970.81, 558,865.08 and 223,682.28 is: 308,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,970.81 : 558,865.08 = 223,682.28 : x
  2. Step 2: Convert to fraction form
    404,970.81/558,865.08 = 223,682.28/x
  3. Step 3: Cross multiply
    404,970.81x = 558,865.08 × 223,682.28
  4. Step 4: Simplify right side
    404,970.81x = 125,008,215,306.78
  5. Step 5: Solve for x
    x = 125,008,215,306.78/404,970.81
  6. Step 6: Final answer
    x = 308,684.51

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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.