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Finding the Fourth Proportional to 338,931.12, 467,725.50 and 188,028.12

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Solution

The fourth proportional to 338,931.12, 467,725.50 and 188,028.12 is: 259,479.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,931.12 : 467,725.50 = 188,028.12 : x
  2. Step 2: Convert to fraction form
    338,931.12/467,725.50 = 188,028.12/x
  3. Step 3: Cross multiply
    338,931.12x = 467,725.50 × 188,028.12
  4. Step 4: Simplify right side
    338,931.12x = 87,945,546,441.06
  5. Step 5: Solve for x
    x = 87,945,546,441.06/338,931.12
  6. Step 6: Final answer
    x = 259,479.11

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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.