Home / 20,906,889,502.56-28,851,142,661.28-11,391,520,016.40

Finding the Fourth Proportional to 20,906,889,502.56, 28,851,142,661.28 and 11,391,520,016.40

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Solution

The fourth proportional to 20,906,889,502.56, 28,851,142,661.28 and 11,391,520,016.40 is: 15,720,098,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906,889,502.56 : 28,851,142,661.28 = 11,391,520,016.40 : x
  2. Step 2: Convert to fraction form
    20,906,889,502.56/28,851,142,661.28 = 11,391,520,016.40/x
  3. Step 3: Cross multiply
    20,906,889,502.56x = 28,851,142,661.28 × 11,391,520,016.40
  4. Step 4: Simplify right side
    20,906,889,502.56x = 328,658,369,121,983,070,208
  5. Step 5: Solve for x
    x = 328,658,369,121,983,070,208/20,906,889,502.56
  6. Step 6: Final answer
    x = 15,720,098,825.88

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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.