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Finding the Fourth Proportional to 72,832,893.60, 109,217,847.60 and 36,427,216.80

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Solution

The fourth proportional to 72,832,893.60, 109,217,847.60 and 36,427,216.80 is: 54,625,074.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,832,893.60 : 109,217,847.60 = 36,427,216.80 : x
  2. Step 2: Convert to fraction form
    72,832,893.60/109,217,847.60 = 36,427,216.80/x
  3. Step 3: Cross multiply
    72,832,893.60x = 109,217,847.60 × 36,427,216.80
  4. Step 4: Simplify right side
    72,832,893.60x = 3,978,502,212,954,559
  5. Step 5: Solve for x
    x = 3,978,502,212,954,559/72,832,893.60
  6. Step 6: Final answer
    x = 54,625,074.14

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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.