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Finding the Fourth Proportional to 404,394.30, 558,060.28 and 223,107.70

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Solution

The fourth proportional to 404,394.30, 558,060.28 and 223,107.70 is: 307,886.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,394.30 : 558,060.28 = 223,107.70 : x
  2. Step 2: Convert to fraction form
    404,394.30/558,060.28 = 223,107.70/x
  3. Step 3: Cross multiply
    404,394.30x = 558,060.28 × 223,107.70
  4. Step 4: Simplify right side
    404,394.30x = 124,507,545,532.16
  5. Step 5: Solve for x
    x = 124,507,545,532.16/404,394.30
  6. Step 6: Final answer
    x = 307,886.50

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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.