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Finding the Fourth Proportional to 118,538.79, 177,808.32 and 48,418.11

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Solution

The fourth proportional to 118,538.79, 177,808.32 and 48,418.11 is: 72,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,538.79 : 177,808.32 = 48,418.11 : x
  2. Step 2: Convert to fraction form
    118,538.79/177,808.32 = 48,418.11/x
  3. Step 3: Cross multiply
    118,538.79x = 177,808.32 × 48,418.11
  4. Step 4: Simplify right side
    118,538.79x = 8,609,142,796.68
  5. Step 5: Solve for x
    x = 8,609,142,796.68/118,538.79
  6. Step 6: Final answer
    x = 72,627.22

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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.