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Finding the Fourth Proportional to 8,374,494.60, 12,561,741.90 and 8,020,200.60

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Solution

The fourth proportional to 8,374,494.60, 12,561,741.90 and 8,020,200.60 is: 12,030,300.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374,494.60 : 12,561,741.90 = 8,020,200.60 : x
  2. Step 2: Convert to fraction form
    8,374,494.60/12,561,741.90 = 8,020,200.60/x
  3. Step 3: Cross multiply
    8,374,494.60x = 12,561,741.90 × 8,020,200.60
  4. Step 4: Simplify right side
    8,374,494.60x = 100,747,689,923,425.14
  5. Step 5: Solve for x
    x = 100,747,689,923,425.14/8,374,494.60
  6. Step 6: Final answer
    x = 12,030,300.90

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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.