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Finding the Fourth Proportional to 250,186.88, 375,319.20 and 84,013.76

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Solution

The fourth proportional to 250,186.88, 375,319.20 and 84,013.76 is: 126,033.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,186.88 : 375,319.20 = 84,013.76 : x
  2. Step 2: Convert to fraction form
    250,186.88/375,319.20 = 84,013.76/x
  3. Step 3: Cross multiply
    250,186.88x = 375,319.20 × 84,013.76
  4. Step 4: Simplify right side
    250,186.88x = 31,531,975,315.60
  5. Step 5: Solve for x
    x = 31,531,975,315.60/250,186.88
  6. Step 6: Final answer
    x = 126,033.69

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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.