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Finding the Fourth Proportional to 86,144.40, 129,163.68 and 33,492.51

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Solution

The fourth proportional to 86,144.40, 129,163.68 and 33,492.51 is: 50,218.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,144.40 : 129,163.68 = 33,492.51 : x
  2. Step 2: Convert to fraction form
    86,144.40/129,163.68 = 33,492.51/x
  3. Step 3: Cross multiply
    86,144.40x = 129,163.68 × 33,492.51
  4. Step 4: Simplify right side
    86,144.40x = 4,326,015,844.04
  5. Step 5: Solve for x
    x = 4,326,015,844.04/86,144.40
  6. Step 6: Final answer
    x = 50,218.19

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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.