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Finding the Fourth Proportional to 186,957.89, 280,473.80 and 68,630.25

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Solution

The fourth proportional to 186,957.89, 280,473.80 and 68,630.25 is: 102,958.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,957.89 : 280,473.80 = 68,630.25 : x
  2. Step 2: Convert to fraction form
    186,957.89/280,473.80 = 68,630.25/x
  3. Step 3: Cross multiply
    186,957.89x = 280,473.80 × 68,630.25
  4. Step 4: Simplify right side
    186,957.89x = 19,248,986,669.30
  5. Step 5: Solve for x
    x = 19,248,986,669.30/186,957.89
  6. Step 6: Final answer
    x = 102,958.95

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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.