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Finding the Fourth Proportional to 62,760.60, 86,605.74 and 57,745.08

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Solution

The fourth proportional to 62,760.60, 86,605.74 and 57,745.08 is: 79,684.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,760.60 : 86,605.74 = 57,745.08 : x
  2. Step 2: Convert to fraction form
    62,760.60/86,605.74 = 57,745.08/x
  3. Step 3: Cross multiply
    62,760.60x = 86,605.74 × 57,745.08
  4. Step 4: Simplify right side
    62,760.60x = 5,001,055,384.76
  5. Step 5: Solve for x
    x = 5,001,055,384.76/62,760.60
  6. Step 6: Final answer
    x = 79,684.63

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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.