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Finding the Fourth Proportional to 404,661.72, 558,433.28 and 223,373.76

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Solution

The fourth proportional to 404,661.72, 558,433.28 and 223,373.76 is: 308,255.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,661.72 : 558,433.28 = 223,373.76 : x
  2. Step 2: Convert to fraction form
    404,661.72/558,433.28 = 223,373.76/x
  3. Step 3: Cross multiply
    404,661.72x = 558,433.28 × 223,373.76
  4. Step 4: Simplify right side
    404,661.72x = 124,739,340,345.86
  5. Step 5: Solve for x
    x = 124,739,340,345.86/404,661.72
  6. Step 6: Final answer
    x = 308,255.84

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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.