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Finding the Fourth Proportional to 76,425.88, 114,661.60 and 36,474.86

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Solution

The fourth proportional to 76,425.88, 114,661.60 and 36,474.86 is: 54,723.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,425.88 : 114,661.60 = 36,474.86 : x
  2. Step 2: Convert to fraction form
    76,425.88/114,661.60 = 36,474.86/x
  3. Step 3: Cross multiply
    76,425.88x = 114,661.60 × 36,474.86
  4. Step 4: Simplify right side
    76,425.88x = 4,182,265,807.38
  5. Step 5: Solve for x
    x = 4,182,265,807.38/76,425.88
  6. Step 6: Final answer
    x = 54,723.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.