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Finding the Fourth Proportional to 123,724.68, 170,735.49 and 67,134.84

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Solution

The fourth proportional to 123,724.68, 170,735.49 and 67,134.84 is: 92,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,724.68 : 170,735.49 = 67,134.84 : x
  2. Step 2: Convert to fraction form
    123,724.68/170,735.49 = 67,134.84/x
  3. Step 3: Cross multiply
    123,724.68x = 170,735.49 × 67,134.84
  4. Step 4: Simplify right side
    123,724.68x = 11,462,299,803.47
  5. Step 5: Solve for x
    x = 11,462,299,803.47/123,724.68
  6. Step 6: Final answer
    x = 92,643.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.