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Finding the Fourth Proportional to 92,751.74, 127,900.58 and 55,018.70

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Solution

The fourth proportional to 92,751.74, 127,900.58 and 55,018.70 is: 75,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,751.74 : 127,900.58 = 55,018.70 : x
  2. Step 2: Convert to fraction form
    92,751.74/127,900.58 = 55,018.70/x
  3. Step 3: Cross multiply
    92,751.74x = 127,900.58 × 55,018.70
  4. Step 4: Simplify right side
    92,751.74x = 7,036,923,640.85
  5. Step 5: Solve for x
    x = 7,036,923,640.85/92,751.74
  6. Step 6: Final answer
    x = 75,868.37

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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.