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Finding the Fourth Proportional to 91,963.88, 126,923.86 and 56,174.48

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Solution

The fourth proportional to 91,963.88, 126,923.86 and 56,174.48 is: 77,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,963.88 : 126,923.86 = 56,174.48 : x
  2. Step 2: Convert to fraction form
    91,963.88/126,923.86 = 56,174.48/x
  3. Step 3: Cross multiply
    91,963.88x = 126,923.86 × 56,174.48
  4. Step 4: Simplify right side
    91,963.88x = 7,129,881,835.09
  5. Step 5: Solve for x
    x = 7,129,881,835.09/91,963.88
  6. Step 6: Final answer
    x = 77,529.15

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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.