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Finding the Fourth Proportional to 111,371.85, 153,694.20 and 60,384.45

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Solution

The fourth proportional to 111,371.85, 153,694.20 and 60,384.45 is: 83,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,371.85 : 153,694.20 = 60,384.45 : x
  2. Step 2: Convert to fraction form
    111,371.85/153,694.20 = 60,384.45/x
  3. Step 3: Cross multiply
    111,371.85x = 153,694.20 × 60,384.45
  4. Step 4: Simplify right side
    111,371.85x = 9,280,739,735.19
  5. Step 5: Solve for x
    x = 9,280,739,735.19/111,371.85
  6. Step 6: Final answer
    x = 83,331.11

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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.