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Finding the Fourth Proportional to 170,918.72, 256,358.64 and 46,269.44

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Solution

The fourth proportional to 170,918.72, 256,358.64 and 46,269.44 is: 69,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,918.72 : 256,358.64 = 46,269.44 : x
  2. Step 2: Convert to fraction form
    170,918.72/256,358.64 = 46,269.44/x
  3. Step 3: Cross multiply
    170,918.72x = 256,358.64 × 46,269.44
  4. Step 4: Simplify right side
    170,918.72x = 11,861,570,711.96
  5. Step 5: Solve for x
    x = 11,861,570,711.96/170,918.72
  6. Step 6: Final answer
    x = 69,398.90

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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.