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Finding the Fourth Proportional to 407,179.45, 610,773.88 and 122,872.47

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Solution

The fourth proportional to 407,179.45, 610,773.88 and 122,872.47 is: 184,310.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,179.45 : 610,773.88 = 122,872.47 : x
  2. Step 2: Convert to fraction form
    407,179.45/610,773.88 = 122,872.47/x
  3. Step 3: Cross multiply
    407,179.45x = 610,773.88 × 122,872.47
  4. Step 4: Simplify right side
    407,179.45x = 75,047,292,193.21
  5. Step 5: Solve for x
    x = 75,047,292,193.21/407,179.45
  6. Step 6: Final answer
    x = 184,310.12

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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.