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Finding the Fourth Proportional to 14,866.21, 20,512.16 and 8,574.94

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Solution

The fourth proportional to 14,866.21, 20,512.16 and 8,574.94 is: 11,831.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,866.21 : 20,512.16 = 8,574.94 : x
  2. Step 2: Convert to fraction form
    14,866.21/20,512.16 = 8,574.94/x
  3. Step 3: Cross multiply
    14,866.21x = 20,512.16 × 8,574.94
  4. Step 4: Simplify right side
    14,866.21x = 175,890,447.12
  5. Step 5: Solve for x
    x = 175,890,447.12/14,866.21
  6. Step 6: Final answer
    x = 11,831.56

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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.