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Finding the Fourth Proportional to 107,783.46, 148,739.13 and 67,519.43

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Solution

The fourth proportional to 107,783.46, 148,739.13 and 67,519.43 is: 93,175.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,783.46 : 148,739.13 = 67,519.43 : x
  2. Step 2: Convert to fraction form
    107,783.46/148,739.13 = 67,519.43/x
  3. Step 3: Cross multiply
    107,783.46x = 148,739.13 × 67,519.43
  4. Step 4: Simplify right side
    107,783.46x = 10,042,781,276.30
  5. Step 5: Solve for x
    x = 10,042,781,276.30/107,783.46
  6. Step 6: Final answer
    x = 93,175.53

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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.