Home / 18,938,793.60-28,408,190.40-8,321,961.60

Finding the Fourth Proportional to 18,938,793.60, 28,408,190.40 and 8,321,961.60

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Solution

The fourth proportional to 18,938,793.60, 28,408,190.40 and 8,321,961.60 is: 12,482,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938,793.60 : 28,408,190.40 = 8,321,961.60 : x
  2. Step 2: Convert to fraction form
    18,938,793.60/28,408,190.40 = 8,321,961.60/x
  3. Step 3: Cross multiply
    18,938,793.60x = 28,408,190.40 × 8,321,961.60
  4. Step 4: Simplify right side
    18,938,793.60x = 236,411,869,634,288.62
  5. Step 5: Solve for x
    x = 236,411,869,634,288.62/18,938,793.60
  6. Step 6: Final answer
    x = 12,482,942.40

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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.