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Finding the Fourth Proportional to 171,788.04, 257,706.36 and 66,617.64

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Solution

The fourth proportional to 171,788.04, 257,706.36 and 66,617.64 is: 99,935.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,788.04 : 257,706.36 = 66,617.64 : x
  2. Step 2: Convert to fraction form
    171,788.04/257,706.36 = 66,617.64/x
  3. Step 3: Cross multiply
    171,788.04x = 257,706.36 × 66,617.64
  4. Step 4: Simplify right side
    171,788.04x = 17,167,789,516.19
  5. Step 5: Solve for x
    x = 17,167,789,516.19/171,788.04
  6. Step 6: Final answer
    x = 99,935.88

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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.