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Finding the Fourth Proportional to 92,899.56, 128,201.76 and 50,458.80

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Solution

The fourth proportional to 92,899.56, 128,201.76 and 50,458.80 is: 69,633.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,899.56 : 128,201.76 = 50,458.80 : x
  2. Step 2: Convert to fraction form
    92,899.56/128,201.76 = 50,458.80/x
  3. Step 3: Cross multiply
    92,899.56x = 128,201.76 × 50,458.80
  4. Step 4: Simplify right side
    92,899.56x = 6,468,906,967.49
  5. Step 5: Solve for x
    x = 6,468,906,967.49/92,899.56
  6. Step 6: Final answer
    x = 69,633.34

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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.