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Finding the Fourth Proportional to 74,036.40, 110,836.44 and 47,662.80

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Solution

The fourth proportional to 74,036.40, 110,836.44 and 47,662.80 is: 71,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,036.40 : 110,836.44 = 47,662.80 : x
  2. Step 2: Convert to fraction form
    74,036.40/110,836.44 = 47,662.80/x
  3. Step 3: Cross multiply
    74,036.40x = 110,836.44 × 47,662.80
  4. Step 4: Simplify right side
    74,036.40x = 5,282,775,072.43
  5. Step 5: Solve for x
    x = 5,282,775,072.43/74,036.40
  6. Step 6: Final answer
    x = 71,353.75

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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.