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Finding the Fourth Proportional to 91,122.19, 136,703.31 and 27,950.98

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Solution

The fourth proportional to 91,122.19, 136,703.31 and 27,950.98 is: 41,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,122.19 : 136,703.31 = 27,950.98 : x
  2. Step 2: Convert to fraction form
    91,122.19/136,703.31 = 27,950.98/x
  3. Step 3: Cross multiply
    91,122.19x = 136,703.31 × 27,950.98
  4. Step 4: Simplify right side
    91,122.19x = 3,820,991,483.74
  5. Step 5: Solve for x
    x = 3,820,991,483.74/91,122.19
  6. Step 6: Final answer
    x = 41,932.61

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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.