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Finding the Fourth Proportional to 48,279, 72,415.26 and 13,218.96

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Solution

The fourth proportional to 48,279, 72,415.26 and 13,218.96 is: 19,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,279 : 72,415.26 = 13,218.96 : x
  2. Step 2: Convert to fraction form
    48,279/72,415.26 = 13,218.96/x
  3. Step 3: Cross multiply
    48,279x = 72,415.26 × 13,218.96
  4. Step 4: Simplify right side
    48,279x = 957,254,425.33
  5. Step 5: Solve for x
    x = 957,254,425.33/48,279
  6. Step 6: Final answer
    x = 19,827.55

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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.