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Finding the Fourth Proportional to 43,503.56, 65,259.66 and 13,913.96

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Solution

The fourth proportional to 43,503.56, 65,259.66 and 13,913.96 is: 20,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,503.56 : 65,259.66 = 13,913.96 : x
  2. Step 2: Convert to fraction form
    43,503.56/65,259.66 = 13,913.96/x
  3. Step 3: Cross multiply
    43,503.56x = 65,259.66 × 13,913.96
  4. Step 4: Simplify right side
    43,503.56x = 908,020,298.85
  5. Step 5: Solve for x
    x = 908,020,298.85/43,503.56
  6. Step 6: Final answer
    x = 20,872.32

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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.