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Finding the Fourth Proportional to 18,692,416.40, 28,051,163.40 and 6,561,856.40

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Solution

The fourth proportional to 18,692,416.40, 28,051,163.40 and 6,561,856.40 is: 9,847,186.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692,416.40 : 28,051,163.40 = 6,561,856.40 : x
  2. Step 2: Convert to fraction form
    18,692,416.40/28,051,163.40 = 6,561,856.40/x
  3. Step 3: Cross multiply
    18,692,416.40x = 28,051,163.40 × 6,561,856.40
  4. Step 4: Simplify right side
    18,692,416.40x = 184,067,706,083,735.75
  5. Step 5: Solve for x
    x = 184,067,706,083,735.75/18,692,416.40
  6. Step 6: Final answer
    x = 9,847,186.27

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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.