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Finding the Fourth Proportional to 117,202.94, 161,740.85 and 63,487.96

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Solution

The fourth proportional to 117,202.94, 161,740.85 and 63,487.96 is: 87,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,202.94 : 161,740.85 = 63,487.96 : x
  2. Step 2: Convert to fraction form
    117,202.94/161,740.85 = 63,487.96/x
  3. Step 3: Cross multiply
    117,202.94x = 161,740.85 × 63,487.96
  4. Step 4: Simplify right side
    117,202.94x = 10,268,596,803.17
  5. Step 5: Solve for x
    x = 10,268,596,803.17/117,202.94
  6. Step 6: Final answer
    x = 87,613.81

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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.