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Finding the Fourth Proportional to 82,985,231.70, 124,477,847.55 and 25,477,410.60

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Solution

The fourth proportional to 82,985,231.70, 124,477,847.55 and 25,477,410.60 is: 38,216,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,985,231.70 : 124,477,847.55 = 25,477,410.60 : x
  2. Step 2: Convert to fraction form
    82,985,231.70/124,477,847.55 = 25,477,410.60/x
  3. Step 3: Cross multiply
    82,985,231.70x = 124,477,847.55 × 25,477,410.60
  4. Step 4: Simplify right side
    82,985,231.70x = 3,171,373,232,635,554
  5. Step 5: Solve for x
    x = 3,171,373,232,635,554/82,985,231.70
  6. Step 6: Final answer
    x = 38,216,115.90

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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.