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Finding the Fourth Proportional to 17,328.40, 25,992.60 and 6,947.60

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Solution

The fourth proportional to 17,328.40, 25,992.60 and 6,947.60 is: 10,421.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,328.40 : 25,992.60 = 6,947.60 : x
  2. Step 2: Convert to fraction form
    17,328.40/25,992.60 = 6,947.60/x
  3. Step 3: Cross multiply
    17,328.40x = 25,992.60 × 6,947.60
  4. Step 4: Simplify right side
    17,328.40x = 180,586,187.76
  5. Step 5: Solve for x
    x = 180,586,187.76/17,328.40
  6. Step 6: Final answer
    x = 10,421.40

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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.