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Finding the Fourth Proportional to 86,534.91, 129,802.41 and 33,959.43

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Solution

The fourth proportional to 86,534.91, 129,802.41 and 33,959.43 is: 50,939.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,534.91 : 129,802.41 = 33,959.43 : x
  2. Step 2: Convert to fraction form
    86,534.91/129,802.41 = 33,959.43/x
  3. Step 3: Cross multiply
    86,534.91x = 129,802.41 × 33,959.43
  4. Step 4: Simplify right side
    86,534.91x = 4,408,015,856.23
  5. Step 5: Solve for x
    x = 4,408,015,856.23/86,534.91
  6. Step 6: Final answer
    x = 50,939.16

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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.