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Finding the Fourth Proportional to 14,671.81, 20,247.03 and 7,957.41

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Solution

The fourth proportional to 14,671.81, 20,247.03 and 7,957.41 is: 10,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.81 : 20,247.03 = 7,957.41 : x
  2. Step 2: Convert to fraction form
    14,671.81/20,247.03 = 7,957.41/x
  3. Step 3: Cross multiply
    14,671.81x = 20,247.03 × 7,957.41
  4. Step 4: Simplify right side
    14,671.81x = 161,113,817.76
  5. Step 5: Solve for x
    x = 161,113,817.76/14,671.81
  6. Step 6: Final answer
    x = 10,981.19

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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.