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Finding the Fourth Proportional to 14,831.19, 20,465.28 and 8,861.49

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Solution

The fourth proportional to 14,831.19, 20,465.28 and 8,861.49 is: 12,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,831.19 : 20,465.28 = 8,861.49 : x
  2. Step 2: Convert to fraction form
    14,831.19/20,465.28 = 8,861.49/x
  3. Step 3: Cross multiply
    14,831.19x = 20,465.28 × 8,861.49
  4. Step 4: Simplify right side
    14,831.19x = 181,352,874.07
  5. Step 5: Solve for x
    x = 181,352,874.07/14,831.19
  6. Step 6: Final answer
    x = 12,227.80

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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.