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Finding the Fourth Proportional to 171,560.68, 257,342.46 and 66,391.72

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Solution

The fourth proportional to 171,560.68, 257,342.46 and 66,391.72 is: 99,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,560.68 : 257,342.46 = 66,391.72 : x
  2. Step 2: Convert to fraction form
    171,560.68/257,342.46 = 66,391.72/x
  3. Step 3: Cross multiply
    171,560.68x = 257,342.46 × 66,391.72
  4. Step 4: Simplify right side
    171,560.68x = 17,085,408,548.43
  5. Step 5: Solve for x
    x = 17,085,408,548.43/171,560.68
  6. Step 6: Final answer
    x = 99,588.14

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1.5x scale

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.