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Finding the Fourth Proportional to 83,991.16, 125,991.33 and 34,063.84

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Solution

The fourth proportional to 83,991.16, 125,991.33 and 34,063.84 is: 51,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,991.16 : 125,991.33 = 34,063.84 : x
  2. Step 2: Convert to fraction form
    83,991.16/125,991.33 = 34,063.84/x
  3. Step 3: Cross multiply
    83,991.16x = 125,991.33 × 34,063.84
  4. Step 4: Simplify right side
    83,991.16x = 4,291,748,506.51
  5. Step 5: Solve for x
    x = 4,291,748,506.51/83,991.16
  6. Step 6: Final answer
    x = 51,097.62

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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.