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Finding the Fourth Proportional to 171,128.88, 256,718.70 and 58,838.04

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Solution

The fourth proportional to 171,128.88, 256,718.70 and 58,838.04 is: 88,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,128.88 : 256,718.70 = 58,838.04 : x
  2. Step 2: Convert to fraction form
    171,128.88/256,718.70 = 58,838.04/x
  3. Step 3: Cross multiply
    171,128.88x = 256,718.70 × 58,838.04
  4. Step 4: Simplify right side
    171,128.88x = 15,104,825,139.35
  5. Step 5: Solve for x
    x = 15,104,825,139.35/171,128.88
  6. Step 6: Final answer
    x = 88,265.79

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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.