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Finding the Fourth Proportional to 74,490.48, 111,660.84 and 36,992.88

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Solution

The fourth proportional to 74,490.48, 111,660.84 and 36,992.88 is: 55,452.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,490.48 : 111,660.84 = 36,992.88 : x
  2. Step 2: Convert to fraction form
    74,490.48/111,660.84 = 36,992.88/x
  3. Step 3: Cross multiply
    74,490.48x = 111,660.84 × 36,992.88
  4. Step 4: Simplify right side
    74,490.48x = 4,130,656,054.82
  5. Step 5: Solve for x
    x = 4,130,656,054.82/74,490.48
  6. Step 6: Final answer
    x = 55,452.13

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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.