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Finding the Fourth Proportional to 191,889.20, 288,129.05 and 171,025.22

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Solution

The fourth proportional to 191,889.20, 288,129.05 and 171,025.22 is: 256,800.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,889.20 : 288,129.05 = 171,025.22 : x
  2. Step 2: Convert to fraction form
    191,889.20/288,129.05 = 171,025.22/x
  3. Step 3: Cross multiply
    191,889.20x = 288,129.05 × 171,025.22
  4. Step 4: Simplify right side
    191,889.20x = 49,277,334,671.18
  5. Step 5: Solve for x
    x = 49,277,334,671.18/191,889.20
  6. Step 6: Final answer
    x = 256,800.98

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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.