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Finding the Fourth Proportional to 77,394.30, 106,108.50 and 75,994.62

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Solution

The fourth proportional to 77,394.30, 106,108.50 and 75,994.62 is: 104,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,394.30 : 106,108.50 = 75,994.62 : x
  2. Step 2: Convert to fraction form
    77,394.30/106,108.50 = 75,994.62/x
  3. Step 3: Cross multiply
    77,394.30x = 106,108.50 × 75,994.62
  4. Step 4: Simplify right side
    77,394.30x = 8,063,675,136.27
  5. Step 5: Solve for x
    x = 8,063,675,136.27/77,394.30
  6. Step 6: Final answer
    x = 104,189.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.