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Finding the Fourth Proportional to 412,325.10, 618,487.65 and 368,001.90

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Solution

The fourth proportional to 412,325.10, 618,487.65 and 368,001.90 is: 552,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,325.10 : 618,487.65 = 368,001.90 : x
  2. Step 2: Convert to fraction form
    412,325.10/618,487.65 = 368,001.90/x
  3. Step 3: Cross multiply
    412,325.10x = 618,487.65 × 368,001.90
  4. Step 4: Simplify right side
    412,325.10x = 227,604,630,326.54
  5. Step 5: Solve for x
    x = 227,604,630,326.54/412,325.10
  6. Step 6: Final answer
    x = 552,002.85

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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.