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Finding the Fourth Proportional to 62,457.38, 86,200.61 and 39,806.44

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Solution

The fourth proportional to 62,457.38, 86,200.61 and 39,806.44 is: 54,938.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,457.38 : 86,200.61 = 39,806.44 : x
  2. Step 2: Convert to fraction form
    62,457.38/86,200.61 = 39,806.44/x
  3. Step 3: Cross multiply
    62,457.38x = 86,200.61 × 39,806.44
  4. Step 4: Simplify right side
    62,457.38x = 3,431,338,995.39
  5. Step 5: Solve for x
    x = 3,431,338,995.39/62,457.38
  6. Step 6: Final answer
    x = 54,938.89

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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.