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Finding the Fourth Proportional to 8,374,492.60, 12,561,738.90 and 8,020,198.60

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Solution

The fourth proportional to 8,374,492.60, 12,561,738.90 and 8,020,198.60 is: 12,030,297.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374,492.60 : 12,561,738.90 = 8,020,198.60 : x
  2. Step 2: Convert to fraction form
    8,374,492.60/12,561,738.90 = 8,020,198.60/x
  3. Step 3: Cross multiply
    8,374,492.60x = 12,561,738.90 × 8,020,198.60
  4. Step 4: Simplify right side
    8,374,492.60x = 100,747,640,739,345.53
  5. Step 5: Solve for x
    x = 100,747,640,739,345.53/8,374,492.60
  6. Step 6: Final answer
    x = 12,030,297.90

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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.