Home / 65,653.53-90,570.92-38,778.13

Finding the Fourth Proportional to 65,653.53, 90,570.92 and 38,778.13

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Solution

The fourth proportional to 65,653.53, 90,570.92 and 38,778.13 is: 53,495.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,653.53 : 90,570.92 = 38,778.13 : x
  2. Step 2: Convert to fraction form
    65,653.53/90,570.92 = 38,778.13/x
  3. Step 3: Cross multiply
    65,653.53x = 90,570.92 × 38,778.13
  4. Step 4: Simplify right side
    65,653.53x = 3,512,170,909.98
  5. Step 5: Solve for x
    x = 3,512,170,909.98/65,653.53
  6. Step 6: Final answer
    x = 53,495.54

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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.