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Finding the Fourth Proportional to 18,957.86, 26,161.90 and 10,574.90

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Solution

The fourth proportional to 18,957.86, 26,161.90 and 10,574.90 is: 14,593.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.86 : 26,161.90 = 10,574.90 : x
  2. Step 2: Convert to fraction form
    18,957.86/26,161.90 = 10,574.90/x
  3. Step 3: Cross multiply
    18,957.86x = 26,161.90 × 10,574.90
  4. Step 4: Simplify right side
    18,957.86x = 276,659,476.31
  5. Step 5: Solve for x
    x = 276,659,476.31/18,957.86
  6. Step 6: Final answer
    x = 14,593.39

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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.