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Finding the Fourth Proportional to 92,905.88, 128,209.34 and 50,464.37

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Solution

The fourth proportional to 92,905.88, 128,209.34 and 50,464.37 is: 69,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,905.88 : 128,209.34 = 50,464.37 : x
  2. Step 2: Convert to fraction form
    92,905.88/128,209.34 = 50,464.37/x
  3. Step 3: Cross multiply
    92,905.88x = 128,209.34 × 50,464.37
  4. Step 4: Simplify right side
    92,905.88x = 6,470,002,677.85
  5. Step 5: Solve for x
    x = 6,470,002,677.85/92,905.88
  6. Step 6: Final answer
    x = 69,640.40

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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.