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Finding the Fourth Proportional to 71,056.68, 98,056.62 and 39,228.60

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Solution

The fourth proportional to 71,056.68, 98,056.62 and 39,228.60 is: 54,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,056.68 : 98,056.62 = 39,228.60 : x
  2. Step 2: Convert to fraction form
    71,056.68/98,056.62 = 39,228.60/x
  3. Step 3: Cross multiply
    71,056.68x = 98,056.62 × 39,228.60
  4. Step 4: Simplify right side
    71,056.68x = 3,846,623,923.33
  5. Step 5: Solve for x
    x = 3,846,623,923.33/71,056.68
  6. Step 6: Final answer
    x = 54,134.59

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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.