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Finding the Fourth Proportional to 90,590.88, 135,836.51 and 48,520.29

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Solution

The fourth proportional to 90,590.88, 135,836.51 and 48,520.29 is: 72,753.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,590.88 : 135,836.51 = 48,520.29 : x
  2. Step 2: Convert to fraction form
    90,590.88/135,836.51 = 48,520.29/x
  3. Step 3: Cross multiply
    90,590.88x = 135,836.51 × 48,520.29
  4. Step 4: Simplify right side
    90,590.88x = 6,590,826,615.19
  5. Step 5: Solve for x
    x = 6,590,826,615.19/90,590.88
  6. Step 6: Final answer
    x = 72,753.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.