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Finding the Fourth Proportional to 86,152.99, 129,229.60 and 41,786.28

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Solution

The fourth proportional to 86,152.99, 129,229.60 and 41,786.28 is: 62,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,152.99 : 129,229.60 = 41,786.28 : x
  2. Step 2: Convert to fraction form
    86,152.99/129,229.60 = 41,786.28/x
  3. Step 3: Cross multiply
    86,152.99x = 129,229.60 × 41,786.28
  4. Step 4: Simplify right side
    86,152.99x = 5,400,024,341.30
  5. Step 5: Solve for x
    x = 5,400,024,341.30/86,152.99
  6. Step 6: Final answer
    x = 62,679.48

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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.