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Finding the Fourth Proportional to 18,409.68, 27,615.53 and 5,928.80

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Solution

The fourth proportional to 18,409.68, 27,615.53 and 5,928.80 is: 8,893.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.68 : 27,615.53 = 5,928.80 : x
  2. Step 2: Convert to fraction form
    18,409.68/27,615.53 = 5,928.80/x
  3. Step 3: Cross multiply
    18,409.68x = 27,615.53 × 5,928.80
  4. Step 4: Simplify right side
    18,409.68x = 163,726,831.01
  5. Step 5: Solve for x
    x = 163,726,831.01/18,409.68
  6. Step 6: Final answer
    x = 8,893.52

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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.