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Finding the Fourth Proportional to 103,693.78, 155,508.21 and 33,558.58

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Solution

The fourth proportional to 103,693.78, 155,508.21 and 33,558.58 is: 50,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.78 : 155,508.21 = 33,558.58 : x
  2. Step 2: Convert to fraction form
    103,693.78/155,508.21 = 33,558.58/x
  3. Step 3: Cross multiply
    103,693.78x = 155,508.21 × 33,558.58
  4. Step 4: Simplify right side
    103,693.78x = 5,218,634,705.94
  5. Step 5: Solve for x
    x = 5,218,634,705.94/103,693.78
  6. Step 6: Final answer
    x = 50,327.36

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1.5x scale

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.