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Finding the Fourth Proportional to 13,984.20, 20,927.70 and 9,610.20

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Solution

The fourth proportional to 13,984.20, 20,927.70 and 9,610.20 is: 14,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.20 : 20,927.70 = 9,610.20 : x
  2. Step 2: Convert to fraction form
    13,984.20/20,927.70 = 9,610.20/x
  3. Step 3: Cross multiply
    13,984.20x = 20,927.70 × 9,610.20
  4. Step 4: Simplify right side
    13,984.20x = 201,119,382.54
  5. Step 5: Solve for x
    x = 201,119,382.54/13,984.20
  6. Step 6: Final answer
    x = 14,381.90

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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.