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Finding the Fourth Proportional to 121,606.80, 182,410.20 and 119,014.80

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Solution

The fourth proportional to 121,606.80, 182,410.20 and 119,014.80 is: 178,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,606.80 : 182,410.20 = 119,014.80 : x
  2. Step 2: Convert to fraction form
    121,606.80/182,410.20 = 119,014.80/x
  3. Step 3: Cross multiply
    121,606.80x = 182,410.20 × 119,014.80
  4. Step 4: Simplify right side
    121,606.80x = 21,709,513,470.96
  5. Step 5: Solve for x
    x = 21,709,513,470.96/121,606.80
  6. Step 6: Final answer
    x = 178,522.20

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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.