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Finding the Fourth Proportional to 681,637.56, 940,662.36 and 379,831.56

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Solution

The fourth proportional to 681,637.56, 940,662.36 and 379,831.56 is: 524,168.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,637.56 : 940,662.36 = 379,831.56 : x
  2. Step 2: Convert to fraction form
    681,637.56/940,662.36 = 379,831.56/x
  3. Step 3: Cross multiply
    681,637.56x = 940,662.36 × 379,831.56
  4. Step 4: Simplify right side
    681,637.56x = 357,293,251,632.08
  5. Step 5: Solve for x
    x = 357,293,251,632.08/681,637.56
  6. Step 6: Final answer
    x = 524,168.96

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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.