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Finding the Fourth Proportional to 160,758.94, 241,128.69 and 71,988.61

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Solution

The fourth proportional to 160,758.94, 241,128.69 and 71,988.61 is: 107,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,758.94 : 241,128.69 = 71,988.61 : x
  2. Step 2: Convert to fraction form
    160,758.94/241,128.69 = 71,988.61/x
  3. Step 3: Cross multiply
    160,758.94x = 241,128.69 × 71,988.61
  4. Step 4: Simplify right side
    160,758.94x = 17,358,519,224.22
  5. Step 5: Solve for x
    x = 17,358,519,224.22/160,758.94
  6. Step 6: Final answer
    x = 107,978.56

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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.