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Finding the Fourth Proportional to 279,917, 386,423.36 and 193,941.18

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Solution

The fourth proportional to 279,917, 386,423.36 and 193,941.18 is: 267,734.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,917 : 386,423.36 = 193,941.18 : x
  2. Step 2: Convert to fraction form
    279,917/386,423.36 = 193,941.18/x
  3. Step 3: Cross multiply
    279,917x = 386,423.36 × 193,941.18
  4. Step 4: Simplify right side
    279,917x = 74,943,402,417.96
  5. Step 5: Solve for x
    x = 74,943,402,417.96/279,917
  6. Step 6: Final answer
    x = 267,734.37

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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.