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Finding the Fourth Proportional to 117,717.60, 176,422.80 and 54,530.40

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Solution

The fourth proportional to 117,717.60, 176,422.80 and 54,530.40 is: 81,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,717.60 : 176,422.80 = 54,530.40 : x
  2. Step 2: Convert to fraction form
    117,717.60/176,422.80 = 54,530.40/x
  3. Step 3: Cross multiply
    117,717.60x = 176,422.80 × 54,530.40
  4. Step 4: Simplify right side
    117,717.60x = 9,620,405,853.12
  5. Step 5: Solve for x
    x = 9,620,405,853.12/117,717.60
  6. Step 6: Final answer
    x = 81,724.45

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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.