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Finding the Fourth Proportional to 18,802.68, 25,947.93 and 12,090.51

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Solution

The fourth proportional to 18,802.68, 25,947.93 and 12,090.51 is: 16,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.68 : 25,947.93 = 12,090.51 : x
  2. Step 2: Convert to fraction form
    18,802.68/25,947.93 = 12,090.51/x
  3. Step 3: Cross multiply
    18,802.68x = 25,947.93 × 12,090.51
  4. Step 4: Simplify right side
    18,802.68x = 313,723,707.14
  5. Step 5: Solve for x
    x = 313,723,707.14/18,802.68
  6. Step 6: Final answer
    x = 16,685.05

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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.