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Finding the Fourth Proportional to 71,390.02, 107,100.06 and 27,015.80

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Solution

The fourth proportional to 71,390.02, 107,100.06 and 27,015.80 is: 40,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,390.02 : 107,100.06 = 27,015.80 : x
  2. Step 2: Convert to fraction form
    71,390.02/107,100.06 = 27,015.80/x
  3. Step 3: Cross multiply
    71,390.02x = 107,100.06 × 27,015.80
  4. Step 4: Simplify right side
    71,390.02x = 2,893,393,800.95
  5. Step 5: Solve for x
    x = 2,893,393,800.95/71,390.02
  6. Step 6: Final answer
    x = 40,529.39

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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.