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Finding the Fourth Proportional to 186,035.19, 279,046.56 and 80,854.17

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Solution

The fourth proportional to 186,035.19, 279,046.56 and 80,854.17 is: 121,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,035.19 : 279,046.56 = 80,854.17 : x
  2. Step 2: Convert to fraction form
    186,035.19/279,046.56 = 80,854.17/x
  3. Step 3: Cross multiply
    186,035.19x = 279,046.56 × 80,854.17
  4. Step 4: Simplify right side
    186,035.19x = 22,562,078,000.16
  5. Step 5: Solve for x
    x = 22,562,078,000.16/186,035.19
  6. Step 6: Final answer
    x = 121,278.55

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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.