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Finding the Fourth Proportional to 18,483.89, 25,510.65 and 11,772.41

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Solution

The fourth proportional to 18,483.89, 25,510.65 and 11,772.41 is: 16,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,483.89 : 25,510.65 = 11,772.41 : x
  2. Step 2: Convert to fraction form
    18,483.89/25,510.65 = 11,772.41/x
  3. Step 3: Cross multiply
    18,483.89x = 25,510.65 × 11,772.41
  4. Step 4: Simplify right side
    18,483.89x = 300,321,831.17
  5. Step 5: Solve for x
    x = 300,321,831.17/18,483.89
  6. Step 6: Final answer
    x = 16,247.76

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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.