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Finding the Fourth Proportional to 404,476.49, 558,176.88 and 223,188.28

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Solution

The fourth proportional to 404,476.49, 558,176.88 and 223,188.28 is: 307,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,476.49 : 558,176.88 = 223,188.28 : x
  2. Step 2: Convert to fraction form
    404,476.49/558,176.88 = 223,188.28/x
  3. Step 3: Cross multiply
    404,476.49x = 558,176.88 × 223,188.28
  4. Step 4: Simplify right side
    404,476.49x = 124,578,537,782.97
  5. Step 5: Solve for x
    x = 124,578,537,782.97/404,476.49
  6. Step 6: Final answer
    x = 307,999.45

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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.