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Finding the Fourth Proportional to 197,668.35, 296,289.90 and 85,401.74

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Solution

The fourth proportional to 197,668.35, 296,289.90 and 85,401.74 is: 128,010.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,668.35 : 296,289.90 = 85,401.74 : x
  2. Step 2: Convert to fraction form
    197,668.35/296,289.90 = 85,401.74/x
  3. Step 3: Cross multiply
    197,668.35x = 296,289.90 × 85,401.74
  4. Step 4: Simplify right side
    197,668.35x = 25,303,673,745.15
  5. Step 5: Solve for x
    x = 25,303,673,745.15/197,668.35
  6. Step 6: Final answer
    x = 128,010.75

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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.