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Finding the Fourth Proportional to 8,321,392.90, 11,665,678.70 and 8,321,392.90

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Solution

The fourth proportional to 8,321,392.90, 11,665,678.70 and 8,321,392.90 is: 11,665,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321,392.90 : 11,665,678.70 = 8,321,392.90 : x
  2. Step 2: Convert to fraction form
    8,321,392.90/11,665,678.70 = 8,321,392.90/x
  3. Step 3: Cross multiply
    8,321,392.90x = 11,665,678.70 × 8,321,392.90
  4. Step 4: Simplify right side
    8,321,392.90x = 97,074,695,907,861.23
  5. Step 5: Solve for x
    x = 97,074,695,907,861.23/8,321,392.90
  6. Step 6: Final answer
    x = 11,665,678.70

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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.