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Finding the Fourth Proportional to 217,771.80, 326,819.70 and 112,536.60

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Solution

The fourth proportional to 217,771.80, 326,819.70 and 112,536.60 is: 168,888.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,771.80 : 326,819.70 = 112,536.60 : x
  2. Step 2: Convert to fraction form
    217,771.80/326,819.70 = 112,536.60/x
  3. Step 3: Cross multiply
    217,771.80x = 326,819.70 × 112,536.60
  4. Step 4: Simplify right side
    217,771.80x = 36,779,177,851.02
  5. Step 5: Solve for x
    x = 36,779,177,851.02/217,771.80
  6. Step 6: Final answer
    x = 168,888.62

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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.