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Finding the Fourth Proportional to 68,613.10, 102,919.65 and 27,054.70

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Solution

The fourth proportional to 68,613.10, 102,919.65 and 27,054.70 is: 40,582.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,613.10 : 102,919.65 = 27,054.70 : x
  2. Step 2: Convert to fraction form
    68,613.10/102,919.65 = 27,054.70/x
  3. Step 3: Cross multiply
    68,613.10x = 102,919.65 × 27,054.70
  4. Step 4: Simplify right side
    68,613.10x = 2,784,460,254.86
  5. Step 5: Solve for x
    x = 2,784,460,254.86/68,613.10
  6. Step 6: Final answer
    x = 40,582.05

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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.