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Finding the Fourth Proportional to 12,603,587,047.20, 18,905,380,570.80 and 12,603,587,047.20

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Solution

The fourth proportional to 12,603,587,047.20, 18,905,380,570.80 and 12,603,587,047.20 is: 18,905,380,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603,587,047.20 : 18,905,380,570.80 = 12,603,587,047.20 : x
  2. Step 2: Convert to fraction form
    12,603,587,047.20/18,905,380,570.80 = 12,603,587,047.20/x
  3. Step 3: Cross multiply
    12,603,587,047.20x = 18,905,380,570.80 × 12,603,587,047.20
  4. Step 4: Simplify right side
    12,603,587,047.20x = 238,275,609,684,521,418,752
  5. Step 5: Solve for x
    x = 238,275,609,684,521,418,752/12,603,587,047.20
  6. Step 6: Final answer
    x = 18,905,380,570.80

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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.