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Finding the Fourth Proportional to 103,515.81, 155,306.52 and 36,954.51

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Solution

The fourth proportional to 103,515.81, 155,306.52 and 36,954.51 is: 55,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.81 : 155,306.52 = 36,954.51 : x
  2. Step 2: Convert to fraction form
    103,515.81/155,306.52 = 36,954.51/x
  3. Step 3: Cross multiply
    103,515.81x = 155,306.52 × 36,954.51
  4. Step 4: Simplify right side
    103,515.81x = 5,739,276,346.41
  5. Step 5: Solve for x
    x = 5,739,276,346.41/103,515.81
  6. Step 6: Final answer
    x = 55,443.48

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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.