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Finding the Fourth Proportional to 171,985.70, 257,966.40 and 59,638.70

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Solution

The fourth proportional to 171,985.70, 257,966.40 and 59,638.70 is: 89,453.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,985.70 : 257,966.40 = 59,638.70 : x
  2. Step 2: Convert to fraction form
    171,985.70/257,966.40 = 59,638.70/x
  3. Step 3: Cross multiply
    171,985.70x = 257,966.40 × 59,638.70
  4. Step 4: Simplify right side
    171,985.70x = 15,384,780,739.68
  5. Step 5: Solve for x
    x = 15,384,780,739.68/171,985.70
  6. Step 6: Final answer
    x = 89,453.84

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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.