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Finding the Fourth Proportional to 86,322.47, 129,463.20 and 32,994.87

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Solution

The fourth proportional to 86,322.47, 129,463.20 and 32,994.87 is: 49,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,322.47 : 129,463.20 = 32,994.87 : x
  2. Step 2: Convert to fraction form
    86,322.47/129,463.20 = 32,994.87/x
  3. Step 3: Cross multiply
    86,322.47x = 129,463.20 × 32,994.87
  4. Step 4: Simplify right side
    86,322.47x = 4,271,621,453.78
  5. Step 5: Solve for x
    x = 4,271,621,453.78/86,322.47
  6. Step 6: Final answer
    x = 49,484.47

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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.