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Finding the Fourth Proportional to 117,110.81, 161,612.92 and 66,809.81

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Solution

The fourth proportional to 117,110.81, 161,612.92 and 66,809.81 is: 92,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,110.81 : 161,612.92 = 66,809.81 : x
  2. Step 2: Convert to fraction form
    117,110.81/161,612.92 = 66,809.81/x
  3. Step 3: Cross multiply
    117,110.81x = 161,612.92 × 66,809.81
  4. Step 4: Simplify right side
    117,110.81x = 10,797,328,966.29
  5. Step 5: Solve for x
    x = 10,797,328,966.29/117,110.81
  6. Step 6: Final answer
    x = 92,197.54

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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.