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Finding the Fourth Proportional to 63,012.64, 86,837.86 and 45,076.54

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Solution

The fourth proportional to 63,012.64, 86,837.86 and 45,076.54 is: 62,120.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,012.64 : 86,837.86 = 45,076.54 : x
  2. Step 2: Convert to fraction form
    63,012.64/86,837.86 = 45,076.54/x
  3. Step 3: Cross multiply
    63,012.64x = 86,837.86 × 45,076.54
  4. Step 4: Simplify right side
    63,012.64x = 3,914,350,269.80
  5. Step 5: Solve for x
    x = 3,914,350,269.80/63,012.64
  6. Step 6: Final answer
    x = 62,120.08

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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.