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Finding the Fourth Proportional to 172,023.60, 257,525.10 and 127,846.20

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Solution

The fourth proportional to 172,023.60, 257,525.10 and 127,846.20 is: 191,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,023.60 : 257,525.10 = 127,846.20 : x
  2. Step 2: Convert to fraction form
    172,023.60/257,525.10 = 127,846.20/x
  3. Step 3: Cross multiply
    172,023.60x = 257,525.10 × 127,846.20
  4. Step 4: Simplify right side
    172,023.60x = 32,923,605,439.62
  5. Step 5: Solve for x
    x = 32,923,605,439.62/172,023.60
  6. Step 6: Final answer
    x = 191,390.05

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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.