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Finding the Fourth Proportional to 13,652.88, 18,841.14 and 7,990.93

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Solution

The fourth proportional to 13,652.88, 18,841.14 and 7,990.93 is: 11,027.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,652.88 : 18,841.14 = 7,990.93 : x
  2. Step 2: Convert to fraction form
    13,652.88/18,841.14 = 7,990.93/x
  3. Step 3: Cross multiply
    13,652.88x = 18,841.14 × 7,990.93
  4. Step 4: Simplify right side
    13,652.88x = 150,558,254.41
  5. Step 5: Solve for x
    x = 150,558,254.41/13,652.88
  6. Step 6: Final answer
    x = 11,027.59

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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.