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Finding the Fourth Proportional to 83,579.40, 115,340.54 and 45,853.65

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Solution

The fourth proportional to 83,579.40, 115,340.54 and 45,853.65 is: 63,278.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,579.40 : 115,340.54 = 45,853.65 : x
  2. Step 2: Convert to fraction form
    83,579.40/115,340.54 = 45,853.65/x
  3. Step 3: Cross multiply
    83,579.40x = 115,340.54 × 45,853.65
  4. Step 4: Simplify right side
    83,579.40x = 5,288,784,522.70
  5. Step 5: Solve for x
    x = 5,288,784,522.70/83,579.40
  6. Step 6: Final answer
    x = 63,278.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.