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Finding the Fourth Proportional to 13,194.76, 18,208 and 7,225.24

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Solution

The fourth proportional to 13,194.76, 18,208 and 7,225.24 is: 9,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,194.76 : 18,208 = 7,225.24 : x
  2. Step 2: Convert to fraction form
    13,194.76/18,208 = 7,225.24/x
  3. Step 3: Cross multiply
    13,194.76x = 18,208 × 7,225.24
  4. Step 4: Simplify right side
    13,194.76x = 131,557,169.92
  5. Step 5: Solve for x
    x = 131,557,169.92/13,194.76
  6. Step 6: Final answer
    x = 9,970.41

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.