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Finding the Fourth Proportional to 72,668.61, 108,908.60 and 32,658.03

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Solution

The fourth proportional to 72,668.61, 108,908.60 and 32,658.03 is: 48,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,668.61 : 108,908.60 = 32,658.03 : x
  2. Step 2: Convert to fraction form
    72,668.61/108,908.60 = 32,658.03/x
  3. Step 3: Cross multiply
    72,668.61x = 108,908.60 × 32,658.03
  4. Step 4: Simplify right side
    72,668.61x = 3,556,740,162.77
  5. Step 5: Solve for x
    x = 3,556,740,162.77/72,668.61
  6. Step 6: Final answer
    x = 48,944.66

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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.