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Finding the Fourth Proportional to 141,387.90, 212,076.30 and 47,893.64

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Solution

The fourth proportional to 141,387.90, 212,076.30 and 47,893.64 is: 71,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,387.90 : 212,076.30 = 47,893.64 : x
  2. Step 2: Convert to fraction form
    141,387.90/212,076.30 = 47,893.64/x
  3. Step 3: Cross multiply
    141,387.90x = 212,076.30 × 47,893.64
  4. Step 4: Simplify right side
    141,387.90x = 10,157,105,964.73
  5. Step 5: Solve for x
    x = 10,157,105,964.73/141,387.90
  6. Step 6: Final answer
    x = 71,838.58

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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.