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Finding the Fourth Proportional to 92,881.97, 128,173.69 and 50,439.59

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Solution

The fourth proportional to 92,881.97, 128,173.69 and 50,439.59 is: 69,604.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,881.97 : 128,173.69 = 50,439.59 : x
  2. Step 2: Convert to fraction form
    92,881.97/128,173.69 = 50,439.59/x
  3. Step 3: Cross multiply
    92,881.97x = 128,173.69 × 50,439.59
  4. Step 4: Simplify right side
    92,881.97x = 6,465,028,372.39
  5. Step 5: Solve for x
    x = 6,465,028,372.39/92,881.97
  6. Step 6: Final answer
    x = 69,604.77

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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.