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Finding the Fourth Proportional to 76,576.71, 105,660.36 and 44,739.46

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Solution

The fourth proportional to 76,576.71, 105,660.36 and 44,739.46 is: 61,731.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,576.71 : 105,660.36 = 44,739.46 : x
  2. Step 2: Convert to fraction form
    76,576.71/105,660.36 = 44,739.46/x
  3. Step 3: Cross multiply
    76,576.71x = 105,660.36 × 44,739.46
  4. Step 4: Simplify right side
    76,576.71x = 4,727,187,449.81
  5. Step 5: Solve for x
    x = 4,727,187,449.81/76,576.71
  6. Step 6: Final answer
    x = 61,731.40

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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.