Home / 30,430,589.85-41,998,520.39-18,831,889.89

Finding the Fourth Proportional to 30,430,589.85, 41,998,520.39 and 18,831,889.89

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Solution

The fourth proportional to 30,430,589.85, 41,998,520.39 and 18,831,889.89 is: 25,990,673.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430,589.85 : 41,998,520.39 = 18,831,889.89 : x
  2. Step 2: Convert to fraction form
    30,430,589.85/41,998,520.39 = 18,831,889.89/x
  3. Step 3: Cross multiply
    30,430,589.85x = 41,998,520.39 × 18,831,889.89
  4. Step 4: Simplify right side
    30,430,589.85x = 790,911,511,433,240.38
  5. Step 5: Solve for x
    x = 790,911,511,433,240.38/30,430,589.85
  6. Step 6: Final answer
    x = 25,990,673.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.