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Finding the Fourth Proportional to 55,992.71, 77,269.92 and 30,842.21

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Solution

The fourth proportional to 55,992.71, 77,269.92 and 30,842.21 is: 42,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,992.71 : 77,269.92 = 30,842.21 : x
  2. Step 2: Convert to fraction form
    55,992.71/77,269.92 = 30,842.21/x
  3. Step 3: Cross multiply
    55,992.71x = 77,269.92 × 30,842.21
  4. Step 4: Simplify right side
    55,992.71x = 2,383,175,099.32
  5. Step 5: Solve for x
    x = 2,383,175,099.32/55,992.71
  6. Step 6: Final answer
    x = 42,562.24

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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.