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Finding the Fourth Proportional to 83,920.59, 115,812.84 and 45,682.62

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Solution

The fourth proportional to 83,920.59, 115,812.84 and 45,682.62 is: 63,043.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,920.59 : 115,812.84 = 45,682.62 : x
  2. Step 2: Convert to fraction form
    83,920.59/115,812.84 = 45,682.62/x
  3. Step 3: Cross multiply
    83,920.59x = 115,812.84 × 45,682.62
  4. Step 4: Simplify right side
    83,920.59x = 5,290,633,153.36
  5. Step 5: Solve for x
    x = 5,290,633,153.36/83,920.59
  6. Step 6: Final answer
    x = 63,043.33

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1.5x scale

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.