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Finding the Fourth Proportional to 116,919, 161,364.02 and 65,942.19

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Solution

The fourth proportional to 116,919, 161,364.02 and 65,942.19 is: 91,009.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,919 : 161,364.02 = 65,942.19 : x
  2. Step 2: Convert to fraction form
    116,919/161,364.02 = 65,942.19/x
  3. Step 3: Cross multiply
    116,919x = 161,364.02 × 65,942.19
  4. Step 4: Simplify right side
    116,919x = 10,640,696,536.29
  5. Step 5: Solve for x
    x = 10,640,696,536.29/116,919
  6. Step 6: Final answer
    x = 91,009.13

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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.