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Finding the Fourth Proportional to 18,991.64, 26,208.02 and 10,494.48

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Solution

The fourth proportional to 18,991.64, 26,208.02 and 10,494.48 is: 14,482.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.64 : 26,208.02 = 10,494.48 : x
  2. Step 2: Convert to fraction form
    18,991.64/26,208.02 = 10,494.48/x
  3. Step 3: Cross multiply
    18,991.64x = 26,208.02 × 10,494.48
  4. Step 4: Simplify right side
    18,991.64x = 275,039,541.73
  5. Step 5: Solve for x
    x = 275,039,541.73/18,991.64
  6. Step 6: Final answer
    x = 14,482.14

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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.