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Finding the Fourth Proportional to 14,671.98, 20,247.17 and 7,957.49

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Solution

The fourth proportional to 14,671.98, 20,247.17 and 7,957.49 is: 10,981.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.98 : 20,247.17 = 7,957.49 : x
  2. Step 2: Convert to fraction form
    14,671.98/20,247.17 = 7,957.49/x
  3. Step 3: Cross multiply
    14,671.98x = 20,247.17 × 7,957.49
  4. Step 4: Simplify right side
    14,671.98x = 161,116,511.78
  5. Step 5: Solve for x
    x = 161,116,511.78/14,671.98
  6. Step 6: Final answer
    x = 10,981.24

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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.