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Finding the Fourth Proportional to 171,613.05, 257,422.28 and 64,968.39

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Solution

The fourth proportional to 171,613.05, 257,422.28 and 64,968.39 is: 97,453.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,613.05 : 257,422.28 = 64,968.39 : x
  2. Step 2: Convert to fraction form
    171,613.05/257,422.28 = 64,968.39/x
  3. Step 3: Cross multiply
    171,613.05x = 257,422.28 × 64,968.39
  4. Step 4: Simplify right side
    171,613.05x = 16,724,310,756.89
  5. Step 5: Solve for x
    x = 16,724,310,756.89/171,613.05
  6. Step 6: Final answer
    x = 97,453.61

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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.