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Finding the Fourth Proportional to 72,047.55, 108,029.64 and 34,556.58

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Solution

The fourth proportional to 72,047.55, 108,029.64 and 34,556.58 is: 51,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,047.55 : 108,029.64 = 34,556.58 : x
  2. Step 2: Convert to fraction form
    72,047.55/108,029.64 = 34,556.58/x
  3. Step 3: Cross multiply
    72,047.55x = 108,029.64 × 34,556.58
  4. Step 4: Simplify right side
    72,047.55x = 3,733,134,897.03
  5. Step 5: Solve for x
    x = 3,733,134,897.03/72,047.55
  6. Step 6: Final answer
    x = 51,814.88

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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.