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Finding the Fourth Proportional to 552,866.78, 763,191.55 and 371,683.78

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Solution

The fourth proportional to 552,866.78, 763,191.55 and 371,683.78 is: 513,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,866.78 : 763,191.55 = 371,683.78 : x
  2. Step 2: Convert to fraction form
    552,866.78/763,191.55 = 371,683.78/x
  3. Step 3: Cross multiply
    552,866.78x = 763,191.55 × 371,683.78
  4. Step 4: Simplify right side
    552,866.78x = 283,665,919,495.93
  5. Step 5: Solve for x
    x = 283,665,919,495.93/552,866.78
  6. Step 6: Final answer
    x = 513,081.86

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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.