Home / 193,289.27-289,864.38-66,895.21

Finding the Fourth Proportional to 193,289.27, 289,864.38 and 66,895.21

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Solution

The fourth proportional to 193,289.27, 289,864.38 and 66,895.21 is: 100,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,289.27 : 289,864.38 = 66,895.21 : x
  2. Step 2: Convert to fraction form
    193,289.27/289,864.38 = 66,895.21/x
  3. Step 3: Cross multiply
    193,289.27x = 289,864.38 × 66,895.21
  4. Step 4: Simplify right side
    193,289.27x = 19,390,537,122.30
  5. Step 5: Solve for x
    x = 19,390,537,122.30/193,289.27
  6. Step 6: Final answer
    x = 100,318.75

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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.