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Finding the Fourth Proportional to 186,604.85, 279,878.42 and 68,248.50

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Solution

The fourth proportional to 186,604.85, 279,878.42 and 68,248.50 is: 102,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,604.85 : 279,878.42 = 68,248.50 : x
  2. Step 2: Convert to fraction form
    186,604.85/279,878.42 = 68,248.50/x
  3. Step 3: Cross multiply
    186,604.85x = 279,878.42 × 68,248.50
  4. Step 4: Simplify right side
    186,604.85x = 19,101,282,006.13
  5. Step 5: Solve for x
    x = 19,101,282,006.13/186,604.85
  6. Step 6: Final answer
    x = 102,362.20

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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.