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Finding the Fourth Proportional to 16,993,486.20, 25,486,686.90 and 6,215,863.80

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Solution

The fourth proportional to 16,993,486.20, 25,486,686.90 and 6,215,863.80 is: 9,322,499.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,993,486.20 : 25,486,686.90 = 6,215,863.80 : x
  2. Step 2: Convert to fraction form
    16,993,486.20/25,486,686.90 = 6,215,863.80/x
  3. Step 3: Cross multiply
    16,993,486.20x = 25,486,686.90 × 6,215,863.80
  4. Step 4: Simplify right side
    16,993,486.20x = 158,421,774,483,644.22
  5. Step 5: Solve for x
    x = 158,421,774,483,644.22/16,993,486.20
  6. Step 6: Final answer
    x = 9,322,499.96

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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.