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Finding the Fourth Proportional to 193,369.80, 266,866.40 and 107,336.86

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Solution

The fourth proportional to 193,369.80, 266,866.40 and 107,336.86 is: 148,133.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,369.80 : 266,866.40 = 107,336.86 : x
  2. Step 2: Convert to fraction form
    193,369.80/266,866.40 = 107,336.86/x
  3. Step 3: Cross multiply
    193,369.80x = 266,866.40 × 107,336.86
  4. Step 4: Simplify right side
    193,369.80x = 28,644,601,545.99
  5. Step 5: Solve for x
    x = 28,644,601,545.99/193,369.80
  6. Step 6: Final answer
    x = 148,133.79

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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.