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Finding the Fourth Proportional to 7,897,994.10, 11,089,078.20 and 7,897,994.10

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Solution

The fourth proportional to 7,897,994.10, 11,089,078.20 and 7,897,994.10 is: 11,089,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897,994.10 : 11,089,078.20 = 7,897,994.10 : x
  2. Step 2: Convert to fraction form
    7,897,994.10/11,089,078.20 = 7,897,994.10/x
  3. Step 3: Cross multiply
    7,897,994.10x = 11,089,078.20 × 7,897,994.10
  4. Step 4: Simplify right side
    7,897,994.10x = 87,581,474,198,038.61
  5. Step 5: Solve for x
    x = 87,581,474,198,038.61/7,897,994.10
  6. Step 6: Final answer
    x = 11,089,078.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.