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Finding the Fourth Proportional to 136,518.84, 188,405.46 and 82,806.12

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Solution

The fourth proportional to 136,518.84, 188,405.46 and 82,806.12 is: 114,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,518.84 : 188,405.46 = 82,806.12 : x
  2. Step 2: Convert to fraction form
    136,518.84/188,405.46 = 82,806.12/x
  3. Step 3: Cross multiply
    136,518.84x = 188,405.46 × 82,806.12
  4. Step 4: Simplify right side
    136,518.84x = 15,601,125,129.42
  5. Step 5: Solve for x
    x = 15,601,125,129.42/136,518.84
  6. Step 6: Final answer
    x = 114,278.18

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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.