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Finding the Fourth Proportional to 76,576.54, 105,660.20 and 44,739.28

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Solution

The fourth proportional to 76,576.54, 105,660.20 and 44,739.28 is: 61,731.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,576.54 : 105,660.20 = 44,739.28 : x
  2. Step 2: Convert to fraction form
    76,576.54/105,660.20 = 44,739.28/x
  3. Step 3: Cross multiply
    76,576.54x = 105,660.20 × 44,739.28
  4. Step 4: Simplify right side
    76,576.54x = 4,727,161,272.66
  5. Step 5: Solve for x
    x = 4,727,161,272.66/76,576.54
  6. Step 6: Final answer
    x = 61,731.19

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1.5x scale

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.