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Finding the Fourth Proportional to 235,678.78, 353,521.48 and 67,199.18

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Solution

The fourth proportional to 235,678.78, 353,521.48 and 67,199.18 is: 100,799.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,678.78 : 353,521.48 = 67,199.18 : x
  2. Step 2: Convert to fraction form
    235,678.78/353,521.48 = 67,199.18/x
  3. Step 3: Cross multiply
    235,678.78x = 353,521.48 × 67,199.18
  4. Step 4: Simplify right side
    235,678.78x = 23,756,353,568.39
  5. Step 5: Solve for x
    x = 23,756,353,568.39/235,678.78
  6. Step 6: Final answer
    x = 100,799.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.