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Finding the Fourth Proportional to 117,054.74, 161,534.31 and 63,338.60

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Solution

The fourth proportional to 117,054.74, 161,534.31 and 63,338.60 is: 87,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,054.74 : 161,534.31 = 63,338.60 : x
  2. Step 2: Convert to fraction form
    117,054.74/161,534.31 = 63,338.60/x
  3. Step 3: Cross multiply
    117,054.74x = 161,534.31 × 63,338.60
  4. Step 4: Simplify right side
    117,054.74x = 10,231,357,047.37
  5. Step 5: Solve for x
    x = 10,231,357,047.37/117,054.74
  6. Step 6: Final answer
    x = 87,406.60

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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.