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Finding the Fourth Proportional to 117,663.94, 162,399.86 and 69,908.10

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Solution

The fourth proportional to 117,663.94, 162,399.86 and 69,908.10 is: 96,487.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,663.94 : 162,399.86 = 69,908.10 : x
  2. Step 2: Convert to fraction form
    117,663.94/162,399.86 = 69,908.10/x
  3. Step 3: Cross multiply
    117,663.94x = 162,399.86 × 69,908.10
  4. Step 4: Simplify right side
    117,663.94x = 11,353,065,652.87
  5. Step 5: Solve for x
    x = 11,353,065,652.87/117,663.94
  6. Step 6: Final answer
    x = 96,487.21

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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.