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Finding the Fourth Proportional to 209,563.55, 289,189.65 and 118,914.11

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Solution

The fourth proportional to 209,563.55, 289,189.65 and 118,914.11 is: 164,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,563.55 : 289,189.65 = 118,914.11 : x
  2. Step 2: Convert to fraction form
    209,563.55/289,189.65 = 118,914.11/x
  3. Step 3: Cross multiply
    209,563.55x = 289,189.65 × 118,914.11
  4. Step 4: Simplify right side
    209,563.55x = 34,388,729,850.96
  5. Step 5: Solve for x
    x = 34,388,729,850.96/209,563.55
  6. Step 6: Final answer
    x = 164,096.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.