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Finding the Fourth Proportional to 62,808.20, 86,653.88 and 38,926.16

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Solution

The fourth proportional to 62,808.20, 86,653.88 and 38,926.16 is: 53,704.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,808.20 : 86,653.88 = 38,926.16 : x
  2. Step 2: Convert to fraction form
    62,808.20/86,653.88 = 38,926.16/x
  3. Step 3: Cross multiply
    62,808.20x = 86,653.88 × 38,926.16
  4. Step 4: Simplify right side
    62,808.20x = 3,373,102,797.50
  5. Step 5: Solve for x
    x = 3,373,102,797.50/62,808.20
  6. Step 6: Final answer
    x = 53,704.82

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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.