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Finding the Fourth Proportional to 91,305.77, 136,989.79 and 49,190.17

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Solution

The fourth proportional to 91,305.77, 136,989.79 and 49,190.17 is: 73,802.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,305.77 : 136,989.79 = 49,190.17 : x
  2. Step 2: Convert to fraction form
    91,305.77/136,989.79 = 49,190.17/x
  3. Step 3: Cross multiply
    91,305.77x = 136,989.79 × 49,190.17
  4. Step 4: Simplify right side
    91,305.77x = 6,738,551,058.36
  5. Step 5: Solve for x
    x = 6,738,551,058.36/91,305.77
  6. Step 6: Final answer
    x = 73,802.03

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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.