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Finding the Fourth Proportional to 82,059.76, 123,111.80 and 25,902.16

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Solution

The fourth proportional to 82,059.76, 123,111.80 and 25,902.16 is: 38,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,059.76 : 123,111.80 = 25,902.16 : x
  2. Step 2: Convert to fraction form
    82,059.76/123,111.80 = 25,902.16/x
  3. Step 3: Cross multiply
    82,059.76x = 123,111.80 × 25,902.16
  4. Step 4: Simplify right side
    82,059.76x = 3,188,861,541.49
  5. Step 5: Solve for x
    x = 3,188,861,541.49/82,059.76
  6. Step 6: Final answer
    x = 38,860.23

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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.