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Finding the Fourth Proportional to 17,309.55, 25,945.79 and 12,364.19

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Solution

The fourth proportional to 17,309.55, 25,945.79 and 12,364.19 is: 18,533.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,309.55 : 25,945.79 = 12,364.19 : x
  2. Step 2: Convert to fraction form
    17,309.55/25,945.79 = 12,364.19/x
  3. Step 3: Cross multiply
    17,309.55x = 25,945.79 × 12,364.19
  4. Step 4: Simplify right side
    17,309.55x = 320,798,485.71
  5. Step 5: Solve for x
    x = 320,798,485.71/17,309.55
  6. Step 6: Final answer
    x = 18,533.03

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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.