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Finding the Fourth Proportional to 50,698.36, 76,066.98 and 21,108.25

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Solution

The fourth proportional to 50,698.36, 76,066.98 and 21,108.25 is: 31,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,698.36 : 76,066.98 = 21,108.25 : x
  2. Step 2: Convert to fraction form
    50,698.36/76,066.98 = 21,108.25/x
  3. Step 3: Cross multiply
    50,698.36x = 76,066.98 × 21,108.25
  4. Step 4: Simplify right side
    50,698.36x = 1,605,640,830.59
  5. Step 5: Solve for x
    x = 1,605,640,830.59/50,698.36
  6. Step 6: Final answer
    x = 31,670.47

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.