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Finding the Fourth Proportional to 43,609.68, 65,420.92 and 14,017.76

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Solution

The fourth proportional to 43,609.68, 65,420.92 and 14,017.76 is: 21,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,609.68 : 65,420.92 = 14,017.76 : x
  2. Step 2: Convert to fraction form
    43,609.68/65,420.92 = 14,017.76/x
  3. Step 3: Cross multiply
    43,609.68x = 65,420.92 × 14,017.76
  4. Step 4: Simplify right side
    43,609.68x = 917,054,755.54
  5. Step 5: Solve for x
    x = 917,054,755.54/43,609.68
  6. Step 6: Final answer
    x = 21,028.70

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1.5x scale

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.