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Finding the Fourth Proportional to 74,048.60, 110,900.10 and 72,563.80

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Solution

The fourth proportional to 74,048.60, 110,900.10 and 72,563.80 is: 108,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,048.60 : 110,900.10 = 72,563.80 : x
  2. Step 2: Convert to fraction form
    74,048.60/110,900.10 = 72,563.80/x
  3. Step 3: Cross multiply
    74,048.60x = 110,900.10 × 72,563.80
  4. Step 4: Simplify right side
    74,048.60x = 8,047,332,676.38
  5. Step 5: Solve for x
    x = 8,047,332,676.38/74,048.60
  6. Step 6: Final answer
    x = 108,676.36

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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.