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Finding the Fourth Proportional to 239,080.69, 329,920.72 and 137,033.02

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Solution

The fourth proportional to 239,080.69, 329,920.72 and 137,033.02 is: 189,099.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,080.69 : 329,920.72 = 137,033.02 : x
  2. Step 2: Convert to fraction form
    239,080.69/329,920.72 = 137,033.02/x
  3. Step 3: Cross multiply
    239,080.69x = 329,920.72 × 137,033.02
  4. Step 4: Simplify right side
    239,080.69x = 45,210,032,622.17
  5. Step 5: Solve for x
    x = 45,210,032,622.17/239,080.69
  6. Step 6: Final answer
    x = 189,099.47

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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.