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Finding the Fourth Proportional to 207,188.47, 285,923.01 and 122,305.51

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Solution

The fourth proportional to 207,188.47, 285,923.01 and 122,305.51 is: 168,783.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,188.47 : 285,923.01 = 122,305.51 : x
  2. Step 2: Convert to fraction form
    207,188.47/285,923.01 = 122,305.51/x
  3. Step 3: Cross multiply
    207,188.47x = 285,923.01 × 122,305.51
  4. Step 4: Simplify right side
    207,188.47x = 34,969,959,558.79
  5. Step 5: Solve for x
    x = 34,969,959,558.79/207,188.47
  6. Step 6: Final answer
    x = 168,783.33

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1.5x scale

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.