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Finding the Fourth Proportional to 74,046.60, 110,897.10 and 72,561.80

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Solution

The fourth proportional to 74,046.60, 110,897.10 and 72,561.80 is: 108,673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,046.60 : 110,897.10 = 72,561.80 : x
  2. Step 2: Convert to fraction form
    74,046.60/110,897.10 = 72,561.80/x
  3. Step 3: Cross multiply
    74,046.60x = 110,897.10 × 72,561.80
  4. Step 4: Simplify right side
    74,046.60x = 8,046,893,190.78
  5. Step 5: Solve for x
    x = 8,046,893,190.78/74,046.60
  6. Step 6: Final answer
    x = 108,673.37

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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.