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Finding the Fourth Proportional to 171,807.77, 257,788.20 and 66,634.94

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Solution

The fourth proportional to 171,807.77, 257,788.20 and 66,634.94 is: 99,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,807.77 : 257,788.20 = 66,634.94 : x
  2. Step 2: Convert to fraction form
    171,807.77/257,788.20 = 66,634.94/x
  3. Step 3: Cross multiply
    171,807.77x = 257,788.20 × 66,634.94
  4. Step 4: Simplify right side
    171,807.77x = 17,177,701,239.71
  5. Step 5: Solve for x
    x = 17,177,701,239.71/171,807.77
  6. Step 6: Final answer
    x = 99,982.10

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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.