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Finding the Fourth Proportional to 170,563.92, 255,513.42 and 103,838.55

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Solution

The fourth proportional to 170,563.92, 255,513.42 and 103,838.55 is: 155,555.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,563.92 : 255,513.42 = 103,838.55 : x
  2. Step 2: Convert to fraction form
    170,563.92/255,513.42 = 103,838.55/x
  3. Step 3: Cross multiply
    170,563.92x = 255,513.42 × 103,838.55
  4. Step 4: Simplify right side
    170,563.92x = 26,532,143,038.34
  5. Step 5: Solve for x
    x = 26,532,143,038.34/170,563.92
  6. Step 6: Final answer
    x = 155,555.42

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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.