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Finding the Fourth Proportional to 107,908.73, 148,933.50 and 67,657.40

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Solution

The fourth proportional to 107,908.73, 148,933.50 and 67,657.40 is: 93,379.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,908.73 : 148,933.50 = 67,657.40 : x
  2. Step 2: Convert to fraction form
    107,908.73/148,933.50 = 67,657.40/x
  3. Step 3: Cross multiply
    107,908.73x = 148,933.50 × 67,657.40
  4. Step 4: Simplify right side
    107,908.73x = 10,076,453,382.90
  5. Step 5: Solve for x
    x = 10,076,453,382.90/107,908.73
  6. Step 6: Final answer
    x = 93,379.41

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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.