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Finding the Fourth Proportional to 74,662.60, 111,864.30 and 48,353.80

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Solution

The fourth proportional to 74,662.60, 111,864.30 and 48,353.80 is: 72,446.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,662.60 : 111,864.30 = 48,353.80 : x
  2. Step 2: Convert to fraction form
    74,662.60/111,864.30 = 48,353.80/x
  3. Step 3: Cross multiply
    74,662.60x = 111,864.30 × 48,353.80
  4. Step 4: Simplify right side
    74,662.60x = 5,409,063,989.34
  5. Step 5: Solve for x
    x = 5,409,063,989.34/74,662.60
  6. Step 6: Final answer
    x = 72,446.77

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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.