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Finding the Fourth Proportional to 50,658.85, 75,988.34 and 13,218.90

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Solution

The fourth proportional to 50,658.85, 75,988.34 and 13,218.90 is: 19,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,658.85 : 75,988.34 = 13,218.90 : x
  2. Step 2: Convert to fraction form
    50,658.85/75,988.34 = 13,218.90/x
  3. Step 3: Cross multiply
    50,658.85x = 75,988.34 × 13,218.90
  4. Step 4: Simplify right side
    50,658.85x = 1,004,482,267.63
  5. Step 5: Solve for x
    x = 1,004,482,267.63/50,658.85
  6. Step 6: Final answer
    x = 19,828.37

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.