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Finding the Fourth Proportional to 117,332.92, 161,918.45 and 66,355.66

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Solution

The fourth proportional to 117,332.92, 161,918.45 and 66,355.66 is: 91,570.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,332.92 : 161,918.45 = 66,355.66 : x
  2. Step 2: Convert to fraction form
    117,332.92/161,918.45 = 66,355.66/x
  3. Step 3: Cross multiply
    117,332.92x = 161,918.45 × 66,355.66
  4. Step 4: Simplify right side
    117,332.92x = 10,744,205,284.15
  5. Step 5: Solve for x
    x = 10,744,205,284.15/117,332.92
  6. Step 6: Final answer
    x = 91,570.25

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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.