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Finding the Fourth Proportional to 18,905,382,502.80, 28,358,073,754.20 and 18,905,382,502.80

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Solution

The fourth proportional to 18,905,382,502.80, 28,358,073,754.20 and 18,905,382,502.80 is: 28,358,073,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905,382,502.80 : 28,358,073,754.20 = 18,905,382,502.80 : x
  2. Step 2: Convert to fraction form
    18,905,382,502.80/28,358,073,754.20 = 18,905,382,502.80/x
  3. Step 3: Cross multiply
    18,905,382,502.80x = 28,358,073,754.20 × 18,905,382,502.80
  4. Step 4: Simplify right side
    18,905,382,502.80x = 536,120,231,365,764,579,328
  5. Step 5: Solve for x
    x = 536,120,231,365,764,579,328/18,905,382,502.80
  6. Step 6: Final answer
    x = 28,358,073,754.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.