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Finding the Fourth Proportional to 74,353.80, 111,530.70 and 52,192.20

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Solution

The fourth proportional to 74,353.80, 111,530.70 and 52,192.20 is: 78,288.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,353.80 : 111,530.70 = 52,192.20 : x
  2. Step 2: Convert to fraction form
    74,353.80/111,530.70 = 52,192.20/x
  3. Step 3: Cross multiply
    74,353.80x = 111,530.70 × 52,192.20
  4. Step 4: Simplify right side
    74,353.80x = 5,821,032,600.54
  5. Step 5: Solve for x
    x = 5,821,032,600.54/74,353.80
  6. Step 6: Final answer
    x = 78,288.30

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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.