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Finding the Fourth Proportional to 86,537.70, 129,879.45 and 33,984.90

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Solution

The fourth proportional to 86,537.70, 129,879.45 and 33,984.90 is: 51,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,537.70 : 129,879.45 = 33,984.90 : x
  2. Step 2: Convert to fraction form
    86,537.70/129,879.45 = 33,984.90/x
  3. Step 3: Cross multiply
    86,537.70x = 129,879.45 × 33,984.90
  4. Step 4: Simplify right side
    86,537.70x = 4,413,940,120.31
  5. Step 5: Solve for x
    x = 4,413,940,120.31/86,537.70
  6. Step 6: Final answer
    x = 51,005.98

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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.