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Finding the Fourth Proportional to 62,560.94, 93,817.82 and 20,431.22

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Solution

The fourth proportional to 62,560.94, 93,817.82 and 20,431.22 is: 30,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,560.94 : 93,817.82 = 20,431.22 : x
  2. Step 2: Convert to fraction form
    62,560.94/93,817.82 = 20,431.22/x
  3. Step 3: Cross multiply
    62,560.94x = 93,817.82 × 20,431.22
  4. Step 4: Simplify right side
    62,560.94x = 1,916,812,520.34
  5. Step 5: Solve for x
    x = 1,916,812,520.34/62,560.94
  6. Step 6: Final answer
    x = 30,639.13

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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.