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Finding the Fourth Proportional to 140,467,496,225.79, 193,811,920,978.93 and 79,499,863,418.01

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Solution

The fourth proportional to 140,467,496,225.79, 193,811,920,978.93 and 79,499,863,418.01 is: 109,691,007,959.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,467,496,225.79 : 193,811,920,978.93 = 79,499,863,418.01 : x
  2. Step 2: Convert to fraction form
    140,467,496,225.79/193,811,920,978.93 = 79,499,863,418.01/x
  3. Step 3: Cross multiply
    140,467,496,225.79x = 193,811,920,978.93 × 79,499,863,418.01
  4. Step 4: Simplify right side
    140,467,496,225.79x = 15,408,021,246,606,114,291,712
  5. Step 5: Solve for x
    x = 15,408,021,246,606,114,291,712/140,467,496,225.79
  6. Step 6: Final answer
    x = 109,691,007,959.87

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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.