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Finding the Fourth Proportional to 171,006.60, 256,509.90 and 161,821.20

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Solution

The fourth proportional to 171,006.60, 256,509.90 and 161,821.20 is: 242,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,006.60 : 256,509.90 = 161,821.20 : x
  2. Step 2: Convert to fraction form
    171,006.60/256,509.90 = 161,821.20/x
  3. Step 3: Cross multiply
    171,006.60x = 256,509.90 × 161,821.20
  4. Step 4: Simplify right side
    171,006.60x = 41,508,739,829.88
  5. Step 5: Solve for x
    x = 41,508,739,829.88/171,006.60
  6. Step 6: Final answer
    x = 242,731.80

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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.