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Finding the Fourth Proportional to 71,379.45, 107,032.73 and 26,398.53

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Solution

The fourth proportional to 71,379.45, 107,032.73 and 26,398.53 is: 39,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,379.45 : 107,032.73 = 26,398.53 : x
  2. Step 2: Convert to fraction form
    71,379.45/107,032.73 = 26,398.53/x
  3. Step 3: Cross multiply
    71,379.45x = 107,032.73 × 26,398.53
  4. Step 4: Simplify right side
    71,379.45x = 2,825,506,601.89
  5. Step 5: Solve for x
    x = 2,825,506,601.89/71,379.45
  6. Step 6: Final answer
    x = 39,584.31

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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.