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Finding the Fourth Proportional to 67,657.78, 93,387.99 and 43,786.06

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Solution

The fourth proportional to 67,657.78, 93,387.99 and 43,786.06 is: 60,437.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,657.78 : 93,387.99 = 43,786.06 : x
  2. Step 2: Convert to fraction form
    67,657.78/93,387.99 = 43,786.06/x
  3. Step 3: Cross multiply
    67,657.78x = 93,387.99 × 43,786.06
  4. Step 4: Simplify right side
    67,657.78x = 4,089,092,133.42
  5. Step 5: Solve for x
    x = 4,089,092,133.42/67,657.78
  6. Step 6: Final answer
    x = 60,437.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.