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Finding the Fourth Proportional to 406,305.48, 609,618.60 and 125,844.60

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Solution

The fourth proportional to 406,305.48, 609,618.60 and 125,844.60 is: 188,816.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,305.48 : 609,618.60 = 125,844.60 : x
  2. Step 2: Convert to fraction form
    406,305.48/609,618.60 = 125,844.60/x
  3. Step 3: Cross multiply
    406,305.48x = 609,618.60 × 125,844.60
  4. Step 4: Simplify right side
    406,305.48x = 76,717,208,869.56
  5. Step 5: Solve for x
    x = 76,717,208,869.56/406,305.48
  6. Step 6: Final answer
    x = 188,816.57

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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.