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Finding the Fourth Proportional to 193,149, 266,632.92 and 121,634.10

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Solution

The fourth proportional to 193,149, 266,632.92 and 121,634.10 is: 167,910.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,149 : 266,632.92 = 121,634.10 : x
  2. Step 2: Convert to fraction form
    193,149/266,632.92 = 121,634.10/x
  3. Step 3: Cross multiply
    193,149x = 266,632.92 × 121,634.10
  4. Step 4: Simplify right side
    193,149x = 32,431,655,254.57
  5. Step 5: Solve for x
    x = 32,431,655,254.57/193,149
  6. Step 6: Final answer
    x = 167,910.03

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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.