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Finding the Fourth Proportional to 117,969.79, 162,805.96 and 70,216.64

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Solution

The fourth proportional to 117,969.79, 162,805.96 and 70,216.64 is: 96,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,969.79 : 162,805.96 = 70,216.64 : x
  2. Step 2: Convert to fraction form
    117,969.79/162,805.96 = 70,216.64/x
  3. Step 3: Cross multiply
    117,969.79x = 162,805.96 × 70,216.64
  4. Step 4: Simplify right side
    117,969.79x = 11,431,687,977.96
  5. Step 5: Solve for x
    x = 11,431,687,977.96/117,969.79
  6. Step 6: Final answer
    x = 96,903.52

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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.