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Finding the Fourth Proportional to 104,491.79, 144,242.81 and 70,546.25

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Solution

The fourth proportional to 104,491.79, 144,242.81 and 70,546.25 is: 97,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,491.79 : 144,242.81 = 70,546.25 : x
  2. Step 2: Convert to fraction form
    104,491.79/144,242.81 = 70,546.25/x
  3. Step 3: Cross multiply
    104,491.79x = 144,242.81 × 70,546.25
  4. Step 4: Simplify right side
    104,491.79x = 10,175,788,982.23
  5. Step 5: Solve for x
    x = 10,175,788,982.23/104,491.79
  6. Step 6: Final answer
    x = 97,383.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.