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Finding the Fourth Proportional to 115,663.67, 173,496.74 and 40,769.86

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Solution

The fourth proportional to 115,663.67, 173,496.74 and 40,769.86 is: 61,155.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,663.67 : 173,496.74 = 40,769.86 : x
  2. Step 2: Convert to fraction form
    115,663.67/173,496.74 = 40,769.86/x
  3. Step 3: Cross multiply
    115,663.67x = 173,496.74 × 40,769.86
  4. Step 4: Simplify right side
    115,663.67x = 7,073,437,800.26
  5. Step 5: Solve for x
    x = 7,073,437,800.26/115,663.67
  6. Step 6: Final answer
    x = 61,155.23

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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.