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Finding the Fourth Proportional to 90,482.90, 135,658.74 and 60,827.18

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Solution

The fourth proportional to 90,482.90, 135,658.74 and 60,827.18 is: 91,196.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,482.90 : 135,658.74 = 60,827.18 : x
  2. Step 2: Convert to fraction form
    90,482.90/135,658.74 = 60,827.18/x
  3. Step 3: Cross multiply
    90,482.90x = 135,658.74 × 60,827.18
  4. Step 4: Simplify right side
    90,482.90x = 8,251,738,596.55
  5. Step 5: Solve for x
    x = 8,251,738,596.55/90,482.90
  6. Step 6: Final answer
    x = 91,196.66

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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.