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Finding the Fourth Proportional to 13,762.74, 18,990.68 and 8,094.14

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Solution

The fourth proportional to 13,762.74, 18,990.68 and 8,094.14 is: 11,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,762.74 : 18,990.68 = 8,094.14 : x
  2. Step 2: Convert to fraction form
    13,762.74/18,990.68 = 8,094.14/x
  3. Step 3: Cross multiply
    13,762.74x = 18,990.68 × 8,094.14
  4. Step 4: Simplify right side
    13,762.74x = 153,713,222.62
  5. Step 5: Solve for x
    x = 153,713,222.62/13,762.74
  6. Step 6: Final answer
    x = 11,168.80

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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.