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Finding the Fourth Proportional to 48,604.30, 66,636.48 and 47,718.56

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Solution

The fourth proportional to 48,604.30, 66,636.48 and 47,718.56 is: 65,422.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,604.30 : 66,636.48 = 47,718.56 : x
  2. Step 2: Convert to fraction form
    48,604.30/66,636.48 = 47,718.56/x
  3. Step 3: Cross multiply
    48,604.30x = 66,636.48 × 47,718.56
  4. Step 4: Simplify right side
    48,604.30x = 3,179,796,869.07
  5. Step 5: Solve for x
    x = 3,179,796,869.07/48,604.30
  6. Step 6: Final answer
    x = 65,422.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.