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Finding the Fourth Proportional to 74,608.98, 102,967.83 and 55,713.30

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Solution

The fourth proportional to 74,608.98, 102,967.83 and 55,713.30 is: 76,889.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,608.98 : 102,967.83 = 55,713.30 : x
  2. Step 2: Convert to fraction form
    74,608.98/102,967.83 = 55,713.30/x
  3. Step 3: Cross multiply
    74,608.98x = 102,967.83 × 55,713.30
  4. Step 4: Simplify right side
    74,608.98x = 5,736,677,603.14
  5. Step 5: Solve for x
    x = 5,736,677,603.14/74,608.98
  6. Step 6: Final answer
    x = 76,889.91

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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.