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Finding the Fourth Proportional to 411,375.01, 617,128.26 and 126,998.71

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Solution

The fourth proportional to 411,375.01, 617,128.26 and 126,998.71 is: 190,518.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,375.01 : 617,128.26 = 126,998.71 : x
  2. Step 2: Convert to fraction form
    411,375.01/617,128.26 = 126,998.71/x
  3. Step 3: Cross multiply
    411,375.01x = 617,128.26 × 126,998.71
  4. Step 4: Simplify right side
    411,375.01x = 78,374,492,924.54
  5. Step 5: Solve for x
    x = 78,374,492,924.54/411,375.01
  6. Step 6: Final answer
    x = 190,518.36

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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.