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Finding the Fourth Proportional to 84,907.46, 127,379.55 and 25,747.49

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Solution

The fourth proportional to 84,907.46, 127,379.55 and 25,747.49 is: 38,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,907.46 : 127,379.55 = 25,747.49 : x
  2. Step 2: Convert to fraction form
    84,907.46/127,379.55 = 25,747.49/x
  3. Step 3: Cross multiply
    84,907.46x = 127,379.55 × 25,747.49
  4. Step 4: Simplify right side
    84,907.46x = 3,279,703,052.93
  5. Step 5: Solve for x
    x = 3,279,703,052.93/84,907.46
  6. Step 6: Final answer
    x = 38,626.80

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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.