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Finding the Fourth Proportional to 307,920.51, 424,930.88 and 171,954.02

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Solution

The fourth proportional to 307,920.51, 424,930.88 and 171,954.02 is: 237,296.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,920.51 : 424,930.88 = 171,954.02 : x
  2. Step 2: Convert to fraction form
    307,920.51/424,930.88 = 171,954.02/x
  3. Step 3: Cross multiply
    307,920.51x = 424,930.88 × 171,954.02
  4. Step 4: Simplify right side
    307,920.51x = 73,068,574,530.35
  5. Step 5: Solve for x
    x = 73,068,574,530.35/307,920.51
  6. Step 6: Final answer
    x = 237,296.87

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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.