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Finding the Fourth Proportional to 74,552.98, 102,921.21 and 57,518.98

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Solution

The fourth proportional to 74,552.98, 102,921.21 and 57,518.98 is: 79,405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,552.98 : 102,921.21 = 57,518.98 : x
  2. Step 2: Convert to fraction form
    74,552.98/102,921.21 = 57,518.98/x
  3. Step 3: Cross multiply
    74,552.98x = 102,921.21 × 57,518.98
  4. Step 4: Simplify right side
    74,552.98x = 5,919,923,019.57
  5. Step 5: Solve for x
    x = 5,919,923,019.57/74,552.98
  6. Step 6: Final answer
    x = 79,405.59

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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.