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Finding the Fourth Proportional to 404,706.90, 558,496.34 and 223,419.08

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Solution

The fourth proportional to 404,706.90, 558,496.34 and 223,419.08 is: 308,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,706.90 : 558,496.34 = 223,419.08 : x
  2. Step 2: Convert to fraction form
    404,706.90/558,496.34 = 223,419.08/x
  3. Step 3: Cross multiply
    404,706.90x = 558,496.34 × 223,419.08
  4. Step 4: Simplify right side
    404,706.90x = 124,778,734,556.59
  5. Step 5: Solve for x
    x = 124,778,734,556.59/404,706.90
  6. Step 6: Final answer
    x = 308,318.77

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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.