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Finding the Fourth Proportional to 11,188.48, 16,769.92 and 7,292.16

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Solution

The fourth proportional to 11,188.48, 16,769.92 and 7,292.16 is: 10,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.48 : 16,769.92 = 7,292.16 : x
  2. Step 2: Convert to fraction form
    11,188.48/16,769.92 = 7,292.16/x
  3. Step 3: Cross multiply
    11,188.48x = 16,769.92 × 7,292.16
  4. Step 4: Simplify right side
    11,188.48x = 122,288,939.83
  5. Step 5: Solve for x
    x = 122,288,939.83/11,188.48
  6. Step 6: Final answer
    x = 10,929.90

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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.