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Finding the Fourth Proportional to 47,803.62, 65,955.66 and 28,671.42

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Solution

The fourth proportional to 47,803.62, 65,955.66 and 28,671.42 is: 39,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,803.62 : 65,955.66 = 28,671.42 : x
  2. Step 2: Convert to fraction form
    47,803.62/65,955.66 = 28,671.42/x
  3. Step 3: Cross multiply
    47,803.62x = 65,955.66 × 28,671.42
  4. Step 4: Simplify right side
    47,803.62x = 1,891,042,429.24
  5. Step 5: Solve for x
    x = 1,891,042,429.24/47,803.62
  6. Step 6: Final answer
    x = 39,558.56

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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.