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Finding the Fourth Proportional to 16,901.60, 25,354.80 and 5,213.60

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Solution

The fourth proportional to 16,901.60, 25,354.80 and 5,213.60 is: 7,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,901.60 : 25,354.80 = 5,213.60 : x
  2. Step 2: Convert to fraction form
    16,901.60/25,354.80 = 5,213.60/x
  3. Step 3: Cross multiply
    16,901.60x = 25,354.80 × 5,213.60
  4. Step 4: Simplify right side
    16,901.60x = 132,189,785.28
  5. Step 5: Solve for x
    x = 132,189,785.28/16,901.60
  6. Step 6: Final answer
    x = 7,821.14

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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.