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Finding the Fourth Proportional to 171,405.72, 257,205.72 and 92,518.20

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Solution

The fourth proportional to 171,405.72, 257,205.72 and 92,518.20 is: 138,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,405.72 : 257,205.72 = 92,518.20 : x
  2. Step 2: Convert to fraction form
    171,405.72/257,205.72 = 92,518.20/x
  3. Step 3: Cross multiply
    171,405.72x = 257,205.72 × 92,518.20
  4. Step 4: Simplify right side
    171,405.72x = 23,796,210,244.10
  5. Step 5: Solve for x
    x = 23,796,210,244.10/171,405.72
  6. Step 6: Final answer
    x = 138,829.73

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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.