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Finding the Fourth Proportional to 86,243.82, 129,364.65 and 30,083.82

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Solution

The fourth proportional to 86,243.82, 129,364.65 and 30,083.82 is: 45,125.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,243.82 : 129,364.65 = 30,083.82 : x
  2. Step 2: Convert to fraction form
    86,243.82/129,364.65 = 30,083.82/x
  3. Step 3: Cross multiply
    86,243.82x = 129,364.65 × 30,083.82
  4. Step 4: Simplify right side
    86,243.82x = 3,891,782,844.96
  5. Step 5: Solve for x
    x = 3,891,782,844.96/86,243.82
  6. Step 6: Final answer
    x = 45,125.35

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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.