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Finding the Fourth Proportional to 195,296.80, 293,060.40 and 128,928.80

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Solution

The fourth proportional to 195,296.80, 293,060.40 and 128,928.80 is: 193,469.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,296.80 : 293,060.40 = 128,928.80 : x
  2. Step 2: Convert to fraction form
    195,296.80/293,060.40 = 128,928.80/x
  3. Step 3: Cross multiply
    195,296.80x = 293,060.40 × 128,928.80
  4. Step 4: Simplify right side
    195,296.80x = 37,783,925,699.52
  5. Step 5: Solve for x
    x = 37,783,925,699.52/195,296.80
  6. Step 6: Final answer
    x = 193,469.25

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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.