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Finding the Fourth Proportional to 43,143.92, 64,745.42 and 15,063.96

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Solution

The fourth proportional to 43,143.92, 64,745.42 and 15,063.96 is: 22,606.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,143.92 : 64,745.42 = 15,063.96 : x
  2. Step 2: Convert to fraction form
    43,143.92/64,745.42 = 15,063.96/x
  3. Step 3: Cross multiply
    43,143.92x = 64,745.42 × 15,063.96
  4. Step 4: Simplify right side
    43,143.92x = 975,322,417.06
  5. Step 5: Solve for x
    x = 975,322,417.06/43,143.92
  6. Step 6: Final answer
    x = 22,606.25

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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.