Home / 30,906,929.70-42,651,727.74-19,311,217.56

Finding the Fourth Proportional to 30,906,929.70, 42,651,727.74 and 19,311,217.56

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Solution

The fourth proportional to 30,906,929.70, 42,651,727.74 and 19,311,217.56 is: 26,649,583.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,906,929.70 : 42,651,727.74 = 19,311,217.56 : x
  2. Step 2: Convert to fraction form
    30,906,929.70/42,651,727.74 = 19,311,217.56/x
  3. Step 3: Cross multiply
    30,906,929.70x = 42,651,727.74 × 19,311,217.56
  4. Step 4: Simplify right side
    30,906,929.70x = 823,656,793,697,027.12
  5. Step 5: Solve for x
    x = 823,656,793,697,027.12/30,906,929.70
  6. Step 6: Final answer
    x = 26,649,583.17

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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.