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Finding the Fourth Proportional to 7,066,745.51, 9,752,196.40 and 3,969,945.32

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Solution

The fourth proportional to 7,066,745.51, 9,752,196.40 and 3,969,945.32 is: 5,478,573.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,066,745.51 : 9,752,196.40 = 3,969,945.32 : x
  2. Step 2: Convert to fraction form
    7,066,745.51/9,752,196.40 = 3,969,945.32/x
  3. Step 3: Cross multiply
    7,066,745.51x = 9,752,196.40 × 3,969,945.32
  4. Step 4: Simplify right side
    7,066,745.51x = 38,715,686,399,215.01
  5. Step 5: Solve for x
    x = 38,715,686,399,215.01/7,066,745.51
  6. Step 6: Final answer
    x = 5,478,573.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.