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Finding the Fourth Proportional to 65,213.30, 89,994.84 and 36,918.38

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Solution

The fourth proportional to 65,213.30, 89,994.84 and 36,918.38 is: 50,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,213.30 : 89,994.84 = 36,918.38 : x
  2. Step 2: Convert to fraction form
    65,213.30/89,994.84 = 36,918.38/x
  3. Step 3: Cross multiply
    65,213.30x = 89,994.84 × 36,918.38
  4. Step 4: Simplify right side
    65,213.30x = 3,322,463,701.16
  5. Step 5: Solve for x
    x = 3,322,463,701.16/65,213.30
  6. Step 6: Final answer
    x = 50,947.64

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1.5x scale

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.