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Finding the Fourth Proportional to 118,613.80, 177,863.10 and 65,967.40

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Solution

The fourth proportional to 118,613.80, 177,863.10 and 65,967.40 is: 98,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,613.80 : 177,863.10 = 65,967.40 : x
  2. Step 2: Convert to fraction form
    118,613.80/177,863.10 = 65,967.40/x
  3. Step 3: Cross multiply
    118,613.80x = 177,863.10 × 65,967.40
  4. Step 4: Simplify right side
    118,613.80x = 11,733,166,262.94
  5. Step 5: Solve for x
    x = 11,733,166,262.94/118,613.80
  6. Step 6: Final answer
    x = 98,919.07

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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.