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Finding the Fourth Proportional to 171,615.60, 257,423.40 and 161,992.80

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Solution

The fourth proportional to 171,615.60, 257,423.40 and 161,992.80 is: 242,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,615.60 : 257,423.40 = 161,992.80 : x
  2. Step 2: Convert to fraction form
    171,615.60/257,423.40 = 161,992.80/x
  3. Step 3: Cross multiply
    171,615.60x = 257,423.40 × 161,992.80
  4. Step 4: Simplify right side
    171,615.60x = 41,700,737,351.52
  5. Step 5: Solve for x
    x = 41,700,737,351.52/171,615.60
  6. Step 6: Final answer
    x = 242,989.20

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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.