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Finding the Fourth Proportional to 188,817.95, 283,129.43 and 55,681.29

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Solution

The fourth proportional to 188,817.95, 283,129.43 and 55,681.29 is: 83,493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,817.95 : 283,129.43 = 55,681.29 : x
  2. Step 2: Convert to fraction form
    188,817.95/283,129.43 = 55,681.29/x
  3. Step 3: Cross multiply
    188,817.95x = 283,129.43 × 55,681.29
  4. Step 4: Simplify right side
    188,817.95x = 15,765,011,620.96
  5. Step 5: Solve for x
    x = 15,765,011,620.96/188,817.95
  6. Step 6: Final answer
    x = 83,493.18

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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.