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Finding the Fourth Proportional to 74,577.69, 111,866.49 and 61,402.37

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Solution

The fourth proportional to 74,577.69, 111,866.49 and 61,402.37 is: 92,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,577.69 : 111,866.49 = 61,402.37 : x
  2. Step 2: Convert to fraction form
    74,577.69/111,866.49 = 61,402.37/x
  3. Step 3: Cross multiply
    74,577.69x = 111,866.49 × 61,402.37
  4. Step 4: Simplify right side
    74,577.69x = 6,868,867,050.25
  5. Step 5: Solve for x
    x = 6,868,867,050.25/74,577.69
  6. Step 6: Final answer
    x = 92,103.51

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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.