Home / 208,763,981,325.21-313,017,815,985.72-81,129,644,108.98

Finding the Fourth Proportional to 208,763,981,325.21, 313,017,815,985.72 and 81,129,644,108.98

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Solution

The fourth proportional to 208,763,981,325.21, 313,017,815,985.72 and 81,129,644,108.98 is: 121,644,662,309.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,763,981,325.21 : 313,017,815,985.72 = 81,129,644,108.98 : x
  2. Step 2: Convert to fraction form
    208,763,981,325.21/313,017,815,985.72 = 81,129,644,108.98/x
  3. Step 3: Cross multiply
    208,763,981,325.21x = 313,017,815,985.72 × 81,129,644,108.98
  4. Step 4: Simplify right side
    208,763,981,325.21x = 25,395,024,010,691,649,470,464
  5. Step 5: Solve for x
    x = 25,395,024,010,691,649,470,464/208,763,981,325.21
  6. Step 6: Final answer
    x = 121,644,662,309.50

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Double scale
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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.