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Finding the Fourth Proportional to 422,412.25, 633,619.19 and 102,562.77

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Solution

The fourth proportional to 422,412.25, 633,619.19 and 102,562.77 is: 153,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,412.25 : 633,619.19 = 102,562.77 : x
  2. Step 2: Convert to fraction form
    422,412.25/633,619.19 = 102,562.77/x
  3. Step 3: Cross multiply
    422,412.25x = 633,619.19 × 102,562.77
  4. Step 4: Simplify right side
    422,412.25x = 64,985,739,251.56
  5. Step 5: Solve for x
    x = 64,985,739,251.56/422,412.25
  6. Step 6: Final answer
    x = 153,844.35

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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.