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Finding the Fourth Proportional to 171,468.66, 257,203.02 and 71,574.36

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Solution

The fourth proportional to 171,468.66, 257,203.02 and 71,574.36 is: 107,361.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,468.66 : 257,203.02 = 71,574.36 : x
  2. Step 2: Convert to fraction form
    171,468.66/257,203.02 = 71,574.36/x
  3. Step 3: Cross multiply
    171,468.66x = 257,203.02 × 71,574.36
  4. Step 4: Simplify right side
    171,468.66x = 18,409,141,546.57
  5. Step 5: Solve for x
    x = 18,409,141,546.57/171,468.66
  6. Step 6: Final answer
    x = 107,361.55

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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.