Home / 30,519,877.75-42,107,014.69-18,913,206.31

Finding the Fourth Proportional to 30,519,877.75, 42,107,014.69 and 18,913,206.31

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Solution

The fourth proportional to 30,519,877.75, 42,107,014.69 and 18,913,206.31 is: 26,093,769.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519,877.75 : 42,107,014.69 = 18,913,206.31 : x
  2. Step 2: Convert to fraction form
    30,519,877.75/42,107,014.69 = 18,913,206.31/x
  3. Step 3: Cross multiply
    30,519,877.75x = 42,107,014.69 × 18,913,206.31
  4. Step 4: Simplify right side
    30,519,877.75x = 796,378,655,930,170.62
  5. Step 5: Solve for x
    x = 796,378,655,930,170.62/30,519,877.75
  6. Step 6: Final answer
    x = 26,093,769.52

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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.