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Finding the Fourth Proportional to 82,605.20, 123,912.52 and 23,436.20

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Solution

The fourth proportional to 82,605.20, 123,912.52 and 23,436.20 is: 35,155.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,605.20 : 123,912.52 = 23,436.20 : x
  2. Step 2: Convert to fraction form
    82,605.20/123,912.52 = 23,436.20/x
  3. Step 3: Cross multiply
    82,605.20x = 123,912.52 × 23,436.20
  4. Step 4: Simplify right side
    82,605.20x = 2,904,038,601.22
  5. Step 5: Solve for x
    x = 2,904,038,601.22/82,605.20
  6. Step 6: Final answer
    x = 35,155.64

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1.5x scale

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.