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Finding the Fourth Proportional to 343,893.60, 515,840.40 and 338,644.80

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Solution

The fourth proportional to 343,893.60, 515,840.40 and 338,644.80 is: 507,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,893.60 : 515,840.40 = 338,644.80 : x
  2. Step 2: Convert to fraction form
    343,893.60/515,840.40 = 338,644.80/x
  3. Step 3: Cross multiply
    343,893.60x = 515,840.40 × 338,644.80
  4. Step 4: Simplify right side
    343,893.60x = 174,686,669,089.92
  5. Step 5: Solve for x
    x = 174,686,669,089.92/343,893.60
  6. Step 6: Final answer
    x = 507,967.20

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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.