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Finding the Fourth Proportional to 118,634.60, 178,052.70 and 48,564.20

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Solution

The fourth proportional to 118,634.60, 178,052.70 and 48,564.20 is: 72,887.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,634.60 : 178,052.70 = 48,564.20 : x
  2. Step 2: Convert to fraction form
    118,634.60/178,052.70 = 48,564.20/x
  3. Step 3: Cross multiply
    118,634.60x = 178,052.70 × 48,564.20
  4. Step 4: Simplify right side
    118,634.60x = 8,646,986,933.34
  5. Step 5: Solve for x
    x = 8,646,986,933.34/118,634.60
  6. Step 6: Final answer
    x = 72,887.56

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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.