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Finding the Fourth Proportional to 18,914.15, 26,101.28 and 10,416.11

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Solution

The fourth proportional to 18,914.15, 26,101.28 and 10,416.11 is: 14,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.15 : 26,101.28 = 10,416.11 : x
  2. Step 2: Convert to fraction form
    18,914.15/26,101.28 = 10,416.11/x
  3. Step 3: Cross multiply
    18,914.15x = 26,101.28 × 10,416.11
  4. Step 4: Simplify right side
    18,914.15x = 271,873,621.03
  5. Step 5: Solve for x
    x = 271,873,621.03/18,914.15
  6. Step 6: Final answer
    x = 14,374.09

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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.