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Finding the Fourth Proportional to 117,345.60, 161,936.64 and 65,662.68

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Solution

The fourth proportional to 117,345.60, 161,936.64 and 65,662.68 is: 90,614.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,345.60 : 161,936.64 = 65,662.68 : x
  2. Step 2: Convert to fraction form
    117,345.60/161,936.64 = 65,662.68/x
  3. Step 3: Cross multiply
    117,345.60x = 161,936.64 × 65,662.68
  4. Step 4: Simplify right side
    117,345.60x = 10,633,193,772.60
  5. Step 5: Solve for x
    x = 10,633,193,772.60/117,345.60
  6. Step 6: Final answer
    x = 90,614.34

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1.5x scale

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.