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Finding the Fourth Proportional to 278,998.63, 385,001.76 and 151,673.11

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Solution

The fourth proportional to 278,998.63, 385,001.76 and 151,673.11 is: 209,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,998.63 : 385,001.76 = 151,673.11 : x
  2. Step 2: Convert to fraction form
    278,998.63/385,001.76 = 151,673.11/x
  3. Step 3: Cross multiply
    278,998.63x = 385,001.76 × 151,673.11
  4. Step 4: Simplify right side
    278,998.63x = 58,394,414,294.67
  5. Step 5: Solve for x
    x = 58,394,414,294.67/278,998.63
  6. Step 6: Final answer
    x = 209,300.00

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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.