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Finding the Fourth Proportional to 18,957.93, 28,381.78 and 11,036.31

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Solution

The fourth proportional to 18,957.93, 28,381.78 and 11,036.31 is: 16,522.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.93 : 28,381.78 = 11,036.31 : x
  2. Step 2: Convert to fraction form
    18,957.93/28,381.78 = 11,036.31/x
  3. Step 3: Cross multiply
    18,957.93x = 28,381.78 × 11,036.31
  4. Step 4: Simplify right side
    18,957.93x = 313,230,122.43
  5. Step 5: Solve for x
    x = 313,230,122.43/18,957.93
  6. Step 6: Final answer
    x = 16,522.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.