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Finding the Fourth Proportional to 7,898,889.60, 11,848,334.40 and 6,706,099.80

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Solution

The fourth proportional to 7,898,889.60, 11,848,334.40 and 6,706,099.80 is: 10,059,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898,889.60 : 11,848,334.40 = 6,706,099.80 : x
  2. Step 2: Convert to fraction form
    7,898,889.60/11,848,334.40 = 6,706,099.80/x
  3. Step 3: Cross multiply
    7,898,889.60x = 11,848,334.40 × 6,706,099.80
  4. Step 4: Simplify right side
    7,898,889.60x = 79,456,112,950,173.12
  5. Step 5: Solve for x
    x = 79,456,112,950,173.12/7,898,889.60
  6. Step 6: Final answer
    x = 10,059,149.70

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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.