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Finding the Fourth Proportional to 83,608.81, 125,474.72 and 55,519.53

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Solution

The fourth proportional to 83,608.81, 125,474.72 and 55,519.53 is: 83,320.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,608.81 : 125,474.72 = 55,519.53 : x
  2. Step 2: Convert to fraction form
    83,608.81/125,474.72 = 55,519.53/x
  3. Step 3: Cross multiply
    83,608.81x = 125,474.72 × 55,519.53
  4. Step 4: Simplify right side
    83,608.81x = 6,966,297,045.45
  5. Step 5: Solve for x
    x = 6,966,297,045.45/83,608.81
  6. Step 6: Final answer
    x = 83,320.13

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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.