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Finding the Fourth Proportional to 57,530.40, 79,391.79 and 32,379.90

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Solution

The fourth proportional to 57,530.40, 79,391.79 and 32,379.90 is: 44,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,530.40 : 79,391.79 = 32,379.90 : x
  2. Step 2: Convert to fraction form
    57,530.40/79,391.79 = 32,379.90/x
  3. Step 3: Cross multiply
    57,530.40x = 79,391.79 × 32,379.90
  4. Step 4: Simplify right side
    57,530.40x = 2,570,698,221.02
  5. Step 5: Solve for x
    x = 2,570,698,221.02/57,530.40
  6. Step 6: Final answer
    x = 44,684.17

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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.