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Finding the Fourth Proportional to 86,506.94, 119,379.37 and 48,780.94

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Solution

The fourth proportional to 86,506.94, 119,379.37 and 48,780.94 is: 67,317.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,506.94 : 119,379.37 = 48,780.94 : x
  2. Step 2: Convert to fraction form
    86,506.94/119,379.37 = 48,780.94/x
  3. Step 3: Cross multiply
    86,506.94x = 119,379.37 × 48,780.94
  4. Step 4: Simplify right side
    86,506.94x = 5,823,437,885.21
  5. Step 5: Solve for x
    x = 5,823,437,885.21/86,506.94
  6. Step 6: Final answer
    x = 67,317.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.