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Finding the Fourth Proportional to 86,014.70, 129,022.05 and 26,855.44

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Solution

The fourth proportional to 86,014.70, 129,022.05 and 26,855.44 is: 40,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,014.70 : 129,022.05 = 26,855.44 : x
  2. Step 2: Convert to fraction form
    86,014.70/129,022.05 = 26,855.44/x
  3. Step 3: Cross multiply
    86,014.70x = 129,022.05 × 26,855.44
  4. Step 4: Simplify right side
    86,014.70x = 3,464,943,481.40
  5. Step 5: Solve for x
    x = 3,464,943,481.40/86,014.70
  6. Step 6: Final answer
    x = 40,283.16

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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.