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Finding the Fourth Proportional to 67,912.80, 93,718.80 and 37,698.06

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Solution

The fourth proportional to 67,912.80, 93,718.80 and 37,698.06 is: 52,022.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,912.80 : 93,718.80 = 37,698.06 : x
  2. Step 2: Convert to fraction form
    67,912.80/93,718.80 = 37,698.06/x
  3. Step 3: Cross multiply
    67,912.80x = 93,718.80 × 37,698.06
  4. Step 4: Simplify right side
    67,912.80x = 3,533,016,945.53
  5. Step 5: Solve for x
    x = 3,533,016,945.53/67,912.80
  6. Step 6: Final answer
    x = 52,022.84

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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.