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Finding the Fourth Proportional to 621,325.78, 932,170.11 and 247,403.86

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Solution

The fourth proportional to 621,325.78, 932,170.11 and 247,403.86 is: 371,178.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,325.78 : 932,170.11 = 247,403.86 : x
  2. Step 2: Convert to fraction form
    621,325.78/932,170.11 = 247,403.86/x
  3. Step 3: Cross multiply
    621,325.78x = 932,170.11 × 247,403.86
  4. Step 4: Simplify right side
    621,325.78x = 230,622,483,390.63
  5. Step 5: Solve for x
    x = 230,622,483,390.63/621,325.78
  6. Step 6: Final answer
    x = 371,178.04

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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.