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Finding the Fourth Proportional to 19,361.42, 28,968.76 and 11,468.17

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Solution

The fourth proportional to 19,361.42, 28,968.76 and 11,468.17 is: 17,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.42 : 28,968.76 = 11,468.17 : x
  2. Step 2: Convert to fraction form
    19,361.42/28,968.76 = 11,468.17/x
  3. Step 3: Cross multiply
    19,361.42x = 28,968.76 × 11,468.17
  4. Step 4: Simplify right side
    19,361.42x = 332,218,664.37
  5. Step 5: Solve for x
    x = 332,218,664.37/19,361.42
  6. Step 6: Final answer
    x = 17,158.80

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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.