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Finding the Fourth Proportional to 86,458.83, 129,699.57 and 33,861.48

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Solution

The fourth proportional to 86,458.83, 129,699.57 and 33,861.48 is: 50,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,458.83 : 129,699.57 = 33,861.48 : x
  2. Step 2: Convert to fraction form
    86,458.83/129,699.57 = 33,861.48/x
  3. Step 3: Cross multiply
    86,458.83x = 129,699.57 × 33,861.48
  4. Step 4: Simplify right side
    86,458.83x = 4,391,819,395.56
  5. Step 5: Solve for x
    x = 4,391,819,395.56/86,458.83
  6. Step 6: Final answer
    x = 50,796.66

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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.