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Finding the Fourth Proportional to 103,678.52, 155,515.92 and 33,557.90

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Solution

The fourth proportional to 103,678.52, 155,515.92 and 33,557.90 is: 50,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.52 : 155,515.92 = 33,557.90 : x
  2. Step 2: Convert to fraction form
    103,678.52/155,515.92 = 33,557.90/x
  3. Step 3: Cross multiply
    103,678.52x = 155,515.92 × 33,557.90
  4. Step 4: Simplify right side
    103,678.52x = 5,218,787,691.77
  5. Step 5: Solve for x
    x = 5,218,787,691.77/103,678.52
  6. Step 6: Final answer
    x = 50,336.25

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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.