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Finding the Fourth Proportional to 404,311.40, 606,467.10 and 104,789.60

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Solution

The fourth proportional to 404,311.40, 606,467.10 and 104,789.60 is: 157,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,311.40 : 606,467.10 = 104,789.60 : x
  2. Step 2: Convert to fraction form
    404,311.40/606,467.10 = 104,789.60/x
  3. Step 3: Cross multiply
    404,311.40x = 606,467.10 × 104,789.60
  4. Step 4: Simplify right side
    404,311.40x = 63,551,444,822.16
  5. Step 5: Solve for x
    x = 63,551,444,822.16/404,311.40
  6. Step 6: Final answer
    x = 157,184.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.