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Finding the Fourth Proportional to 171,152.32, 256,854.60 and 81,195.32

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Solution

The fourth proportional to 171,152.32, 256,854.60 and 81,195.32 is: 121,852.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,152.32 : 256,854.60 = 81,195.32 : x
  2. Step 2: Convert to fraction form
    171,152.32/256,854.60 = 81,195.32/x
  3. Step 3: Cross multiply
    171,152.32x = 256,854.60 × 81,195.32
  4. Step 4: Simplify right side
    171,152.32x = 20,855,391,440.47
  5. Step 5: Solve for x
    x = 20,855,391,440.47/171,152.32
  6. Step 6: Final answer
    x = 121,852.81

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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.