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Finding the Fourth Proportional to 12,039,245,999.40, 18,058,868,999.10 and 12,039,245,999.40

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Solution

The fourth proportional to 12,039,245,999.40, 18,058,868,999.10 and 12,039,245,999.40 is: 18,058,868,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039,245,999.40 : 18,058,868,999.10 = 12,039,245,999.40 : x
  2. Step 2: Convert to fraction form
    12,039,245,999.40/18,058,868,999.10 = 12,039,245,999.40/x
  3. Step 3: Cross multiply
    12,039,245,999.40x = 18,058,868,999.10 × 12,039,245,999.40
  4. Step 4: Simplify right side
    12,039,245,999.40x = 217,415,166,351,103,328,256
  5. Step 5: Solve for x
    x = 217,415,166,351,103,328,256/12,039,245,999.40
  6. Step 6: Final answer
    x = 18,058,868,999.10

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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.