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Finding the Fourth Proportional to 14,831.71, 20,466.98 and 8,456.60

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Solution

The fourth proportional to 14,831.71, 20,466.98 and 8,456.60 is: 11,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,831.71 : 20,466.98 = 8,456.60 : x
  2. Step 2: Convert to fraction form
    14,831.71/20,466.98 = 8,456.60/x
  3. Step 3: Cross multiply
    14,831.71x = 20,466.98 × 8,456.60
  4. Step 4: Simplify right side
    14,831.71x = 173,081,103.66
  5. Step 5: Solve for x
    x = 173,081,103.66/14,831.71
  6. Step 6: Final answer
    x = 11,669.67

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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.