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Finding the Fourth Proportional to 168,785.52, 232,816.40 and 128,410.80

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Solution

The fourth proportional to 168,785.52, 232,816.40 and 128,410.80 is: 177,125.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,785.52 : 232,816.40 = 128,410.80 : x
  2. Step 2: Convert to fraction form
    168,785.52/232,816.40 = 128,410.80/x
  3. Step 3: Cross multiply
    168,785.52x = 232,816.40 × 128,410.80
  4. Step 4: Simplify right side
    168,785.52x = 29,896,140,177.12
  5. Step 5: Solve for x
    x = 29,896,140,177.12/168,785.52
  6. Step 6: Final answer
    x = 177,125.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.