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Finding the Fourth Proportional to 353,911.85, 488,403.90 and 192,766.85

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Solution

The fourth proportional to 353,911.85, 488,403.90 and 192,766.85 is: 266,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,911.85 : 488,403.90 = 192,766.85 : x
  2. Step 2: Convert to fraction form
    353,911.85/488,403.90 = 192,766.85/x
  3. Step 3: Cross multiply
    353,911.85x = 488,403.90 × 192,766.85
  4. Step 4: Simplify right side
    353,911.85x = 94,148,081,330.72
  5. Step 5: Solve for x
    x = 94,148,081,330.72/353,911.85
  6. Step 6: Final answer
    x = 266,021.27

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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.