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Finding the Fourth Proportional to 63,538.64, 87,687.28 and 36,686.08

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Solution

The fourth proportional to 63,538.64, 87,687.28 and 36,686.08 is: 50,629.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,538.64 : 87,687.28 = 36,686.08 : x
  2. Step 2: Convert to fraction form
    63,538.64/87,687.28 = 36,686.08/x
  3. Step 3: Cross multiply
    63,538.64x = 87,687.28 × 36,686.08
  4. Step 4: Simplify right side
    63,538.64x = 3,216,902,569.06
  5. Step 5: Solve for x
    x = 3,216,902,569.06/63,538.64
  6. Step 6: Final answer
    x = 50,629.07

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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.