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Finding the Fourth Proportional to 117,236.40, 175,854.60 and 112,117.20

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Solution

The fourth proportional to 117,236.40, 175,854.60 and 112,117.20 is: 168,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,236.40 : 175,854.60 = 112,117.20 : x
  2. Step 2: Convert to fraction form
    117,236.40/175,854.60 = 112,117.20/x
  3. Step 3: Cross multiply
    117,236.40x = 175,854.60 × 112,117.20
  4. Step 4: Simplify right side
    117,236.40x = 19,716,325,359.12
  5. Step 5: Solve for x
    x = 19,716,325,359.12/117,236.40
  6. Step 6: Final answer
    x = 168,175.80

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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.