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Finding the Fourth Proportional to 515,611.17, 773,458.27 and 195,916.25

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Solution

The fourth proportional to 515,611.17, 773,458.27 and 195,916.25 is: 293,890.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,611.17 : 773,458.27 = 195,916.25 : x
  2. Step 2: Convert to fraction form
    515,611.17/773,458.27 = 195,916.25/x
  3. Step 3: Cross multiply
    515,611.17x = 773,458.27 × 195,916.25
  4. Step 4: Simplify right side
    515,611.17x = 151,533,045,233.74
  5. Step 5: Solve for x
    x = 151,533,045,233.74/515,611.17
  6. Step 6: Final answer
    x = 293,890.15

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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.