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Finding the Fourth Proportional to 136,297.76, 188,086.70 and 75,866.84

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Solution

The fourth proportional to 136,297.76, 188,086.70 and 75,866.84 is: 104,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,297.76 : 188,086.70 = 75,866.84 : x
  2. Step 2: Convert to fraction form
    136,297.76/188,086.70 = 75,866.84/x
  3. Step 3: Cross multiply
    136,297.76x = 188,086.70 × 75,866.84
  4. Step 4: Simplify right side
    136,297.76x = 14,269,542,824.26
  5. Step 5: Solve for x
    x = 14,269,542,824.26/136,297.76
  6. Step 6: Final answer
    x = 104,693.89

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1.5x scale

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.