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Finding the Fourth Proportional to 86,601.83, 129,911.24 and 35,990.39

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Solution

The fourth proportional to 86,601.83, 129,911.24 and 35,990.39 is: 53,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,601.83 : 129,911.24 = 35,990.39 : x
  2. Step 2: Convert to fraction form
    86,601.83/129,911.24 = 35,990.39/x
  3. Step 3: Cross multiply
    86,601.83x = 129,911.24 × 35,990.39
  4. Step 4: Simplify right side
    86,601.83x = 4,675,556,607.74
  5. Step 5: Solve for x
    x = 4,675,556,607.74/86,601.83
  6. Step 6: Final answer
    x = 53,989.12

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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.