Home / 20,906,889,771.50-28,851,143,028.99-11,391,520,283.18

Finding the Fourth Proportional to 20,906,889,771.50, 28,851,143,028.99 and 11,391,520,283.18

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Solution

The fourth proportional to 20,906,889,771.50, 28,851,143,028.99 and 11,391,520,283.18 is: 15,720,099,192.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906,889,771.50 : 28,851,143,028.99 = 11,391,520,283.18 : x
  2. Step 2: Convert to fraction form
    20,906,889,771.50/28,851,143,028.99 = 11,391,520,283.18/x
  3. Step 3: Cross multiply
    20,906,889,771.50x = 28,851,143,028.99 × 11,391,520,283.18
  4. Step 4: Simplify right side
    20,906,889,771.50x = 328,658,381,007,666,872,320
  5. Step 5: Solve for x
    x = 328,658,381,007,666,872,320/20,906,889,771.50
  6. Step 6: Final answer
    x = 15,720,099,192.17

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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.