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Finding the Fourth Proportional to 407,445.23, 611,170.89 and 154,657.56

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Solution

The fourth proportional to 407,445.23, 611,170.89 and 154,657.56 is: 231,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,445.23 : 611,170.89 = 154,657.56 : x
  2. Step 2: Convert to fraction form
    407,445.23/611,170.89 = 154,657.56/x
  3. Step 3: Cross multiply
    407,445.23x = 611,170.89 × 154,657.56
  4. Step 4: Simplify right side
    407,445.23x = 94,522,198,590.43
  5. Step 5: Solve for x
    x = 94,522,198,590.43/407,445.23
  6. Step 6: Final answer
    x = 231,987.50

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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.