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Finding the Fourth Proportional to 6,701,505.12, 9,976,462.56 and 6,661,647.84

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Solution

The fourth proportional to 6,701,505.12, 9,976,462.56 and 6,661,647.84 is: 9,917,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,701,505.12 : 9,976,462.56 = 6,661,647.84 : x
  2. Step 2: Convert to fraction form
    6,701,505.12/9,976,462.56 = 6,661,647.84/x
  3. Step 3: Cross multiply
    6,701,505.12x = 9,976,462.56 × 6,661,647.84
  4. Step 4: Simplify right side
    6,701,505.12x = 66,459,680,263,664.88
  5. Step 5: Solve for x
    x = 66,459,680,263,664.88/6,701,505.12
  6. Step 6: Final answer
    x = 9,917,127.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.