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Finding the Fourth Proportional to 185,872.94, 256,506.99 and 100,991.42

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Solution

The fourth proportional to 185,872.94, 256,506.99 and 100,991.42 is: 139,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,872.94 : 256,506.99 = 100,991.42 : x
  2. Step 2: Convert to fraction form
    185,872.94/256,506.99 = 100,991.42/x
  3. Step 3: Cross multiply
    185,872.94x = 256,506.99 × 100,991.42
  4. Step 4: Simplify right side
    185,872.94x = 25,905,005,160.03
  5. Step 5: Solve for x
    x = 25,905,005,160.03/185,872.94
  6. Step 6: Final answer
    x = 139,369.43

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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.