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Finding the Fourth Proportional to 401,097.19, 553,443.97 and 228,936.55

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Solution

The fourth proportional to 401,097.19, 553,443.97 and 228,936.55 is: 315,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,097.19 : 553,443.97 = 228,936.55 : x
  2. Step 2: Convert to fraction form
    401,097.19/553,443.97 = 228,936.55/x
  3. Step 3: Cross multiply
    401,097.19x = 553,443.97 × 228,936.55
  4. Step 4: Simplify right side
    401,097.19x = 126,703,553,110.10
  5. Step 5: Solve for x
    x = 126,703,553,110.10/401,097.19
  6. Step 6: Final answer
    x = 315,892.40

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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.