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Finding the Fourth Proportional to 117,955.20, 176,932.80 and 112,123.20

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Solution

The fourth proportional to 117,955.20, 176,932.80 and 112,123.20 is: 168,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,955.20 : 176,932.80 = 112,123.20 : x
  2. Step 2: Convert to fraction form
    117,955.20/176,932.80 = 112,123.20/x
  3. Step 3: Cross multiply
    117,955.20x = 176,932.80 × 112,123.20
  4. Step 4: Simplify right side
    117,955.20x = 19,838,271,720.96
  5. Step 5: Solve for x
    x = 19,838,271,720.96/117,955.20
  6. Step 6: Final answer
    x = 168,184.80

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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.