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Finding the Fourth Proportional to 136,072.80, 190,698.75 and 136,072.80

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Solution

The fourth proportional to 136,072.80, 190,698.75 and 136,072.80 is: 190,698.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,072.80 : 190,698.75 = 136,072.80 : x
  2. Step 2: Convert to fraction form
    136,072.80/190,698.75 = 136,072.80/x
  3. Step 3: Cross multiply
    136,072.80x = 190,698.75 × 136,072.80
  4. Step 4: Simplify right side
    136,072.80x = 25,948,912,869.00
  5. Step 5: Solve for x
    x = 25,948,912,869.00/136,072.80
  6. Step 6: Final answer
    x = 190,698.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.