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Finding the Fourth Proportional to 136,357.98, 188,173.49 and 75,929.33

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Solution

The fourth proportional to 136,357.98, 188,173.49 and 75,929.33 is: 104,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,357.98 : 188,173.49 = 75,929.33 : x
  2. Step 2: Convert to fraction form
    136,357.98/188,173.49 = 75,929.33/x
  3. Step 3: Cross multiply
    136,357.98x = 188,173.49 × 75,929.33
  4. Step 4: Simplify right side
    136,357.98x = 14,287,885,698.95
  5. Step 5: Solve for x
    x = 14,287,885,698.95/136,357.98
  6. Step 6: Final answer
    x = 104,782.17

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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.