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Finding the Fourth Proportional to 193,158, 266,499.36 and 121,609.44

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Solution

The fourth proportional to 193,158, 266,499.36 and 121,609.44 is: 167,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,158 : 266,499.36 = 121,609.44 : x
  2. Step 2: Convert to fraction form
    193,158/266,499.36 = 121,609.44/x
  3. Step 3: Cross multiply
    193,158x = 266,499.36 × 121,609.44
  4. Step 4: Simplify right side
    193,158x = 32,408,837,929.96
  5. Step 5: Solve for x
    x = 32,408,837,929.96/193,158
  6. Step 6: Final answer
    x = 167,784.08

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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.