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Finding the Fourth Proportional to 353,668.23, 530,519.94 and 100,986.21

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Solution

The fourth proportional to 353,668.23, 530,519.94 and 100,986.21 is: 151,484.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,668.23 : 530,519.94 = 100,986.21 : x
  2. Step 2: Convert to fraction form
    353,668.23/530,519.94 = 100,986.21/x
  3. Step 3: Cross multiply
    353,668.23x = 530,519.94 × 100,986.21
  4. Step 4: Simplify right side
    353,668.23x = 53,575,198,070.03
  5. Step 5: Solve for x
    x = 53,575,198,070.03/353,668.23
  6. Step 6: Final answer
    x = 151,484.34

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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.