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Finding the Fourth Proportional to 117,712.40, 176,568.60 and 109,072.40

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Solution

The fourth proportional to 117,712.40, 176,568.60 and 109,072.40 is: 163,608.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,712.40 : 176,568.60 = 109,072.40 : x
  2. Step 2: Convert to fraction form
    117,712.40/176,568.60 = 109,072.40/x
  3. Step 3: Cross multiply
    117,712.40x = 176,568.60 × 109,072.40
  4. Step 4: Simplify right side
    117,712.40x = 19,258,760,966.64
  5. Step 5: Solve for x
    x = 19,258,760,966.64/117,712.40
  6. Step 6: Final answer
    x = 163,608.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.