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Finding the Fourth Proportional to 206,593.70, 310,072.80 and 122,248.40

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Solution

The fourth proportional to 206,593.70, 310,072.80 and 122,248.40 is: 183,480.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,593.70 : 310,072.80 = 122,248.40 : x
  2. Step 2: Convert to fraction form
    206,593.70/310,072.80 = 122,248.40/x
  3. Step 3: Cross multiply
    206,593.70x = 310,072.80 × 122,248.40
  4. Step 4: Simplify right side
    206,593.70x = 37,905,903,683.52
  5. Step 5: Solve for x
    x = 37,905,903,683.52/206,593.70
  6. Step 6: Final answer
    x = 183,480.44

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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.