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Finding the Fourth Proportional to 14,562.40, 21,789.60 and 10,674.40

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Solution

The fourth proportional to 14,562.40, 21,789.60 and 10,674.40 is: 15,972.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,562.40 : 21,789.60 = 10,674.40 : x
  2. Step 2: Convert to fraction form
    14,562.40/21,789.60 = 10,674.40/x
  3. Step 3: Cross multiply
    14,562.40x = 21,789.60 × 10,674.40
  4. Step 4: Simplify right side
    14,562.40x = 232,590,906.24
  5. Step 5: Solve for x
    x = 232,590,906.24/14,562.40
  6. Step 6: Final answer
    x = 15,972.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.