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Finding the Fourth Proportional to 92,963.80, 128,286.43 and 50,521.42

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Solution

The fourth proportional to 92,963.80, 128,286.43 and 50,521.42 is: 69,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,963.80 : 128,286.43 = 50,521.42 : x
  2. Step 2: Convert to fraction form
    92,963.80/128,286.43 = 50,521.42/x
  3. Step 3: Cross multiply
    92,963.80x = 128,286.43 × 50,521.42
  4. Step 4: Simplify right side
    92,963.80x = 6,481,212,928.57
  5. Step 5: Solve for x
    x = 6,481,212,928.57/92,963.80
  6. Step 6: Final answer
    x = 69,717.60

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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.