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Finding the Fourth Proportional to 117,471.76, 162,119.04 and 66,484.54

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Solution

The fourth proportional to 117,471.76, 162,119.04 and 66,484.54 is: 91,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,471.76 : 162,119.04 = 66,484.54 : x
  2. Step 2: Convert to fraction form
    117,471.76/162,119.04 = 66,484.54/x
  3. Step 3: Cross multiply
    117,471.76x = 162,119.04 × 66,484.54
  4. Step 4: Simplify right side
    117,471.76x = 10,778,409,799.64
  5. Step 5: Solve for x
    x = 10,778,409,799.64/117,471.76
  6. Step 6: Final answer
    x = 91,753.20

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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.