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Finding the Fourth Proportional to 74,047.60, 110,898.60 and 72,562.80

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Solution

The fourth proportional to 74,047.60, 110,898.60 and 72,562.80 is: 108,674.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,047.60 : 110,898.60 = 72,562.80 : x
  2. Step 2: Convert to fraction form
    74,047.60/110,898.60 = 72,562.80/x
  3. Step 3: Cross multiply
    74,047.60x = 110,898.60 × 72,562.80
  4. Step 4: Simplify right side
    74,047.60x = 8,047,112,932.08
  5. Step 5: Solve for x
    x = 8,047,112,932.08/74,047.60
  6. Step 6: Final answer
    x = 108,674.86

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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.