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Finding the Fourth Proportional to 339,893.66, 469,043.12 and 186,931.64

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Solution

The fourth proportional to 339,893.66, 469,043.12 and 186,931.64 is: 257,960.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,893.66 : 469,043.12 = 186,931.64 : x
  2. Step 2: Convert to fraction form
    339,893.66/469,043.12 = 186,931.64/x
  3. Step 3: Cross multiply
    339,893.66x = 469,043.12 × 186,931.64
  4. Step 4: Simplify right side
    339,893.66x = 87,678,999,652.32
  5. Step 5: Solve for x
    x = 87,678,999,652.32/339,893.66
  6. Step 6: Final answer
    x = 257,960.09

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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.