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Finding the Fourth Proportional to 58,662.12, 81,020.54 and 39,766.44

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Solution

The fourth proportional to 58,662.12, 81,020.54 and 39,766.44 is: 54,922.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,662.12 : 81,020.54 = 39,766.44 : x
  2. Step 2: Convert to fraction form
    58,662.12/81,020.54 = 39,766.44/x
  3. Step 3: Cross multiply
    58,662.12x = 81,020.54 × 39,766.44
  4. Step 4: Simplify right side
    58,662.12x = 3,221,898,442.68
  5. Step 5: Solve for x
    x = 3,221,898,442.68/58,662.12
  6. Step 6: Final answer
    x = 54,922.98

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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.