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Finding the Fourth Proportional to 45,891.73, 68,862.68 and 17,812.90

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Solution

The fourth proportional to 45,891.73, 68,862.68 and 17,812.90 is: 26,729.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,891.73 : 68,862.68 = 17,812.90 : x
  2. Step 2: Convert to fraction form
    45,891.73/68,862.68 = 17,812.90/x
  3. Step 3: Cross multiply
    45,891.73x = 68,862.68 × 17,812.90
  4. Step 4: Simplify right side
    45,891.73x = 1,226,643,599.19
  5. Step 5: Solve for x
    x = 1,226,643,599.19/45,891.73
  6. Step 6: Final answer
    x = 26,729.08

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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.