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Finding the Fourth Proportional to 193,897.80, 290,846.70 and 128,233.80

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Solution

The fourth proportional to 193,897.80, 290,846.70 and 128,233.80 is: 192,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,897.80 : 290,846.70 = 128,233.80 : x
  2. Step 2: Convert to fraction form
    193,897.80/290,846.70 = 128,233.80/x
  3. Step 3: Cross multiply
    193,897.80x = 290,846.70 × 128,233.80
  4. Step 4: Simplify right side
    193,897.80x = 37,296,377,558.46
  5. Step 5: Solve for x
    x = 37,296,377,558.46/193,897.80
  6. Step 6: Final answer
    x = 192,350.70

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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.