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Finding the Fourth Proportional to 115,403.20, 173,182.20 and 40,523.20

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Solution

The fourth proportional to 115,403.20, 173,182.20 and 40,523.20 is: 60,811.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,403.20 : 173,182.20 = 40,523.20 : x
  2. Step 2: Convert to fraction form
    115,403.20/173,182.20 = 40,523.20/x
  3. Step 3: Cross multiply
    115,403.20x = 173,182.20 × 40,523.20
  4. Step 4: Simplify right side
    115,403.20x = 7,017,896,927.04
  5. Step 5: Solve for x
    x = 7,017,896,927.04/115,403.20
  6. Step 6: Final answer
    x = 60,811.98

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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.