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Finding the Fourth Proportional to 103,615.80, 155,390.74 and 33,478.52

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Solution

The fourth proportional to 103,615.80, 155,390.74 and 33,478.52 is: 50,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.80 : 155,390.74 = 33,478.52 : x
  2. Step 2: Convert to fraction form
    103,615.80/155,390.74 = 33,478.52/x
  3. Step 3: Cross multiply
    103,615.80x = 155,390.74 × 33,478.52
  4. Step 4: Simplify right side
    103,615.80x = 5,202,251,996.90
  5. Step 5: Solve for x
    x = 5,202,251,996.90/103,615.80
  6. Step 6: Final answer
    x = 50,207.13

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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.