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Finding the Fourth Proportional to 368,466.40, 552,699.60 and 131,816.80

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Solution

The fourth proportional to 368,466.40, 552,699.60 and 131,816.80 is: 197,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,466.40 : 552,699.60 = 131,816.80 : x
  2. Step 2: Convert to fraction form
    368,466.40/552,699.60 = 131,816.80/x
  3. Step 3: Cross multiply
    368,466.40x = 552,699.60 × 131,816.80
  4. Step 4: Simplify right side
    368,466.40x = 72,855,092,633.28
  5. Step 5: Solve for x
    x = 72,855,092,633.28/368,466.40
  6. Step 6: Final answer
    x = 197,725.20

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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.