Home / 30,519,890.90-42,107,032.86-18,913,219.46

Finding the Fourth Proportional to 30,519,890.90, 42,107,032.86 and 18,913,219.46

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Solution

The fourth proportional to 30,519,890.90, 42,107,032.86 and 18,913,219.46 is: 26,093,787.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519,890.90 : 42,107,032.86 = 18,913,219.46 : x
  2. Step 2: Convert to fraction form
    30,519,890.90/42,107,032.86 = 18,913,219.46/x
  3. Step 3: Cross multiply
    30,519,890.90x = 42,107,032.86 × 18,913,219.46
  4. Step 4: Simplify right side
    30,519,890.90x = 796,379,553,290,611.50
  5. Step 5: Solve for x
    x = 796,379,553,290,611.50/30,519,890.90
  6. Step 6: Final answer
    x = 26,093,787.68

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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.