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Finding the Fourth Proportional to 400,866.66, 553,042.01 and 228,794.17

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Solution

The fourth proportional to 400,866.66, 553,042.01 and 228,794.17 is: 315,648.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,866.66 : 553,042.01 = 228,794.17 : x
  2. Step 2: Convert to fraction form
    400,866.66/553,042.01 = 228,794.17/x
  3. Step 3: Cross multiply
    400,866.66x = 553,042.01 × 228,794.17
  4. Step 4: Simplify right side
    400,866.66x = 126,532,786,509.11
  5. Step 5: Solve for x
    x = 126,532,786,509.11/400,866.66
  6. Step 6: Final answer
    x = 315,648.07

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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.