Home / 209,128.44-313,693.72-51,356.96

Finding the Fourth Proportional to 209,128.44, 313,693.72 and 51,356.96

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Solution

The fourth proportional to 209,128.44, 313,693.72 and 51,356.96 is: 77,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,128.44 : 313,693.72 = 51,356.96 : x
  2. Step 2: Convert to fraction form
    209,128.44/313,693.72 = 51,356.96/x
  3. Step 3: Cross multiply
    209,128.44x = 313,693.72 × 51,356.96
  4. Step 4: Simplify right side
    209,128.44x = 16,110,354,261.82
  5. Step 5: Solve for x
    x = 16,110,354,261.82/209,128.44
  6. Step 6: Final answer
    x = 77,035.69

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Why These Related Problems?

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