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Finding the Fourth Proportional to 13,090.95, 18,066.92 and 11,460.95

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Solution

The fourth proportional to 13,090.95, 18,066.92 and 11,460.95 is: 15,817.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.95 : 18,066.92 = 11,460.95 : x
  2. Step 2: Convert to fraction form
    13,090.95/18,066.92 = 11,460.95/x
  3. Step 3: Cross multiply
    13,090.95x = 18,066.92 × 11,460.95
  4. Step 4: Simplify right side
    13,090.95x = 207,063,919.13
  5. Step 5: Solve for x
    x = 207,063,919.13/13,090.95
  6. Step 6: Final answer
    x = 15,817.33

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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.