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Finding the Fourth Proportional to 84,834.84, 127,231.24 and 28,673.71

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Solution

The fourth proportional to 84,834.84, 127,231.24 and 28,673.71 is: 43,003.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,834.84 : 127,231.24 = 28,673.71 : x
  2. Step 2: Convert to fraction form
    84,834.84/127,231.24 = 28,673.71/x
  3. Step 3: Cross multiply
    84,834.84x = 127,231.24 × 28,673.71
  4. Step 4: Simplify right side
    84,834.84x = 3,648,190,899.18
  5. Step 5: Solve for x
    x = 3,648,190,899.18/84,834.84
  6. Step 6: Final answer
    x = 43,003.45

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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.