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Finding the Fourth Proportional to 23,659.84, 35,485.92 and 7,240

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Solution

The fourth proportional to 23,659.84, 35,485.92 and 7,240 is: 10,858.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,659.84 : 35,485.92 = 7,240 : x
  2. Step 2: Convert to fraction form
    23,659.84/35,485.92 = 7,240/x
  3. Step 3: Cross multiply
    23,659.84x = 35,485.92 × 7,240
  4. Step 4: Simplify right side
    23,659.84x = 256,918,060.80
  5. Step 5: Solve for x
    x = 256,918,060.80/23,659.84
  6. Step 6: Final answer
    x = 10,858.82

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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.