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Finding the Fourth Proportional to 136,422.94, 188,269.48 and 75,993.63

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Solution

The fourth proportional to 136,422.94, 188,269.48 and 75,993.63 is: 104,874.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,422.94 : 188,269.48 = 75,993.63 : x
  2. Step 2: Convert to fraction form
    136,422.94/188,269.48 = 75,993.63/x
  3. Step 3: Cross multiply
    136,422.94x = 188,269.48 × 75,993.63
  4. Step 4: Simplify right side
    136,422.94x = 14,307,280,592.39
  5. Step 5: Solve for x
    x = 14,307,280,592.39/136,422.94
  6. Step 6: Final answer
    x = 104,874.45

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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.