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Finding the Fourth Proportional to 11,897,978.01, 17,846,967.18 and 7,853,519.72

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Solution

The fourth proportional to 11,897,978.01, 17,846,967.18 and 7,853,519.72 is: 11,780,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,897,978.01 : 17,846,967.18 = 7,853,519.72 : x
  2. Step 2: Convert to fraction form
    11,897,978.01/17,846,967.18 = 7,853,519.72/x
  3. Step 3: Cross multiply
    11,897,978.01x = 17,846,967.18 × 7,853,519.72
  4. Step 4: Simplify right side
    11,897,978.01x = 140,161,508,601,087.95
  5. Step 5: Solve for x
    x = 140,161,508,601,087.95/11,897,978.01
  6. Step 6: Final answer
    x = 11,780,279.68

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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.