Home / 65,680.81-98,535.08-21,304.12

Finding the Fourth Proportional to 65,680.81, 98,535.08 and 21,304.12

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Solution

The fourth proportional to 65,680.81, 98,535.08 and 21,304.12 is: 31,960.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.81 : 98,535.08 = 21,304.12 : x
  2. Step 2: Convert to fraction form
    65,680.81/98,535.08 = 21,304.12/x
  3. Step 3: Cross multiply
    65,680.81x = 98,535.08 × 21,304.12
  4. Step 4: Simplify right side
    65,680.81x = 2,099,203,168.53
  5. Step 5: Solve for x
    x = 2,099,203,168.53/65,680.81
  6. Step 6: Final answer
    x = 31,960.68

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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.