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Finding the Fourth Proportional to 136,853.34, 188,850.39 and 77,233.50

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Solution

The fourth proportional to 136,853.34, 188,850.39 and 77,233.50 is: 106,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,853.34 : 188,850.39 = 77,233.50 : x
  2. Step 2: Convert to fraction form
    136,853.34/188,850.39 = 77,233.50/x
  3. Step 3: Cross multiply
    136,853.34x = 188,850.39 × 77,233.50
  4. Step 4: Simplify right side
    136,853.34x = 14,585,576,596.07
  5. Step 5: Solve for x
    x = 14,585,576,596.07/136,853.34
  6. Step 6: Final answer
    x = 106,578.16

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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.