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Finding the Fourth Proportional to 681,229,485.16, 940,097,049.72 and 367,963,698.49

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Solution

The fourth proportional to 681,229,485.16, 940,097,049.72 and 367,963,698.49 is: 507,790,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,229,485.16 : 940,097,049.72 = 367,963,698.49 : x
  2. Step 2: Convert to fraction form
    681,229,485.16/940,097,049.72 = 367,963,698.49/x
  3. Step 3: Cross multiply
    681,229,485.16x = 940,097,049.72 × 367,963,698.49
  4. Step 4: Simplify right side
    681,229,485.16x = 345,921,587,354,508,608
  5. Step 5: Solve for x
    x = 345,921,587,354,508,608/681,229,485.16
  6. Step 6: Final answer
    x = 507,790,098.48

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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.