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Finding the Fourth Proportional to 21,831.48, 32,750.64 and 9,351.54

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Solution

The fourth proportional to 21,831.48, 32,750.64 and 9,351.54 is: 14,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.48 : 32,750.64 = 9,351.54 : x
  2. Step 2: Convert to fraction form
    21,831.48/32,750.64 = 9,351.54/x
  3. Step 3: Cross multiply
    21,831.48x = 32,750.64 × 9,351.54
  4. Step 4: Simplify right side
    21,831.48x = 306,268,919.99
  5. Step 5: Solve for x
    x = 306,268,919.99/21,831.48
  6. Step 6: Final answer
    x = 14,028.77

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1.5x scale

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.