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Finding the Fourth Proportional to 73,562.60, 110,311.18 and 20,960.20

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Solution

The fourth proportional to 73,562.60, 110,311.18 and 20,960.20 is: 31,430.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,562.60 : 110,311.18 = 20,960.20 : x
  2. Step 2: Convert to fraction form
    73,562.60/110,311.18 = 20,960.20/x
  3. Step 3: Cross multiply
    73,562.60x = 110,311.18 × 20,960.20
  4. Step 4: Simplify right side
    73,562.60x = 2,312,144,395.04
  5. Step 5: Solve for x
    x = 2,312,144,395.04/73,562.60
  6. Step 6: Final answer
    x = 31,430.98

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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.