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Finding the Fourth Proportional to 117,687.20, 176,530.80 and 108,010.40

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Solution

The fourth proportional to 117,687.20, 176,530.80 and 108,010.40 is: 162,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,687.20 : 176,530.80 = 108,010.40 : x
  2. Step 2: Convert to fraction form
    117,687.20/176,530.80 = 108,010.40/x
  3. Step 3: Cross multiply
    117,687.20x = 176,530.80 × 108,010.40
  4. Step 4: Simplify right side
    117,687.20x = 19,067,162,320.32
  5. Step 5: Solve for x
    x = 19,067,162,320.32/117,687.20
  6. Step 6: Final answer
    x = 162,015.60

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1.5x scale

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.