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Finding the Fourth Proportional to 193,358.72, 266,775.22 and 112,729.19

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Solution

The fourth proportional to 193,358.72, 266,775.22 and 112,729.19 is: 155,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,358.72 : 266,775.22 = 112,729.19 : x
  2. Step 2: Convert to fraction form
    193,358.72/266,775.22 = 112,729.19/x
  3. Step 3: Cross multiply
    193,358.72x = 266,775.22 × 112,729.19
  4. Step 4: Simplify right side
    193,358.72x = 30,073,354,462.67
  5. Step 5: Solve for x
    x = 30,073,354,462.67/193,358.72
  6. Step 6: Final answer
    x = 155,531.41

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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.