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Finding the Fourth Proportional to 92,998.86, 128,339.34 and 50,558.30

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Solution

The fourth proportional to 92,998.86, 128,339.34 and 50,558.30 is: 69,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,998.86 : 128,339.34 = 50,558.30 : x
  2. Step 2: Convert to fraction form
    92,998.86/128,339.34 = 50,558.30/x
  3. Step 3: Cross multiply
    92,998.86x = 128,339.34 × 50,558.30
  4. Step 4: Simplify right side
    92,998.86x = 6,488,618,853.52
  5. Step 5: Solve for x
    x = 6,488,618,853.52/92,998.86
  6. Step 6: Final answer
    x = 69,770.95

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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.