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Finding the Fourth Proportional to 117,076.51, 161,565.56 and 63,361.53

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Solution

The fourth proportional to 117,076.51, 161,565.56 and 63,361.53 is: 87,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,076.51 : 161,565.56 = 63,361.53 : x
  2. Step 2: Convert to fraction form
    117,076.51/161,565.56 = 63,361.53/x
  3. Step 3: Cross multiply
    117,076.51x = 161,565.56 × 63,361.53
  4. Step 4: Simplify right side
    117,076.51x = 10,237,041,235.31
  5. Step 5: Solve for x
    x = 10,237,041,235.31/117,076.51
  6. Step 6: Final answer
    x = 87,438.90

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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.