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Finding the Fourth Proportional to 7,647,230.40, 11,477,066.40 and 7,398,398.40

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Solution

The fourth proportional to 7,647,230.40, 11,477,066.40 and 7,398,398.40 is: 11,103,615.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,647,230.40 : 11,477,066.40 = 7,398,398.40 : x
  2. Step 2: Convert to fraction form
    7,647,230.40/11,477,066.40 = 7,398,398.40/x
  3. Step 3: Cross multiply
    7,647,230.40x = 11,477,066.40 × 7,398,398.40
  4. Step 4: Simplify right side
    7,647,230.40x = 84,911,909,690,453.77
  5. Step 5: Solve for x
    x = 84,911,909,690,453.77/7,647,230.40
  6. Step 6: Final answer
    x = 11,103,615.98

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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.