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Finding the Fourth Proportional to 57,772.71, 86,710.11 and 28,216.62

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Solution

The fourth proportional to 57,772.71, 86,710.11 and 28,216.62 is: 42,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,772.71 : 86,710.11 = 28,216.62 : x
  2. Step 2: Convert to fraction form
    57,772.71/86,710.11 = 28,216.62/x
  3. Step 3: Cross multiply
    57,772.71x = 86,710.11 × 28,216.62
  4. Step 4: Simplify right side
    57,772.71x = 2,446,666,224.03
  5. Step 5: Solve for x
    x = 2,446,666,224.03/57,772.71
  6. Step 6: Final answer
    x = 42,349.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.