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Finding the Fourth Proportional to 404,991.36, 558,884.57 and 223,715.95

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Solution

The fourth proportional to 404,991.36, 558,884.57 and 223,715.95 is: 308,726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,991.36 : 558,884.57 = 223,715.95 : x
  2. Step 2: Convert to fraction form
    404,991.36/558,884.57 = 223,715.95/x
  3. Step 3: Cross multiply
    404,991.36x = 558,884.57 × 223,715.95
  4. Step 4: Simplify right side
    404,991.36x = 125,031,390,002.10
  5. Step 5: Solve for x
    x = 125,031,390,002.10/404,991.36
  6. Step 6: Final answer
    x = 308,726.07

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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.