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Finding the Fourth Proportional to 14,671.44, 20,243.52 and 9,362.88

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Solution

The fourth proportional to 14,671.44, 20,243.52 and 9,362.88 is: 12,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,671.44 : 20,243.52 = 9,362.88 : x
  2. Step 2: Convert to fraction form
    14,671.44/20,243.52 = 9,362.88/x
  3. Step 3: Cross multiply
    14,671.44x = 20,243.52 × 9,362.88
  4. Step 4: Simplify right side
    14,671.44x = 189,537,648.54
  5. Step 5: Solve for x
    x = 189,537,648.54/14,671.44
  6. Step 6: Final answer
    x = 12,918.82

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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.