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Finding the Fourth Proportional to 58,832.73, 81,206.96 and 39,980.79

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Solution

The fourth proportional to 58,832.73, 81,206.96 and 39,980.79 is: 55,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,832.73 : 81,206.96 = 39,980.79 : x
  2. Step 2: Convert to fraction form
    58,832.73/81,206.96 = 39,980.79/x
  3. Step 3: Cross multiply
    58,832.73x = 81,206.96 × 39,980.79
  4. Step 4: Simplify right side
    58,832.73x = 3,246,718,214.39
  5. Step 5: Solve for x
    x = 3,246,718,214.39/58,832.73
  6. Step 6: Final answer
    x = 55,185.58

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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.