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Finding the Fourth Proportional to 79,580.60, 119,378.69 and 28,993.38

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Solution

The fourth proportional to 79,580.60, 119,378.69 and 28,993.38 is: 43,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,580.60 : 119,378.69 = 28,993.38 : x
  2. Step 2: Convert to fraction form
    79,580.60/119,378.69 = 28,993.38/x
  3. Step 3: Cross multiply
    79,580.60x = 119,378.69 × 28,993.38
  4. Step 4: Simplify right side
    79,580.60x = 3,461,191,723.07
  5. Step 5: Solve for x
    x = 3,461,191,723.07/79,580.60
  6. Step 6: Final answer
    x = 43,492.91

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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.