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Finding the Fourth Proportional to 140,239.88, 193,383.66 and 92,432

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Solution

The fourth proportional to 140,239.88, 193,383.66 and 92,432 is: 127,459.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,239.88 : 193,383.66 = 92,432 : x
  2. Step 2: Convert to fraction form
    140,239.88/193,383.66 = 92,432/x
  3. Step 3: Cross multiply
    140,239.88x = 193,383.66 × 92,432
  4. Step 4: Simplify right side
    140,239.88x = 17,874,838,461.12
  5. Step 5: Solve for x
    x = 17,874,838,461.12/140,239.88
  6. Step 6: Final answer
    x = 127,459.03

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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.