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Finding the Fourth Proportional to 103,040.70, 154,474.65 and 53,792.70

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Solution

The fourth proportional to 103,040.70, 154,474.65 and 53,792.70 is: 80,643.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.70 : 154,474.65 = 53,792.70 : x
  2. Step 2: Convert to fraction form
    103,040.70/154,474.65 = 53,792.70/x
  3. Step 3: Cross multiply
    103,040.70x = 154,474.65 × 53,792.70
  4. Step 4: Simplify right side
    103,040.70x = 8,309,608,505.06
  5. Step 5: Solve for x
    x = 8,309,608,505.06/103,040.70
  6. Step 6: Final answer
    x = 80,643.94

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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.