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Finding the Fourth Proportional to 112,435.32, 168,662.76 and 45,880.08

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Solution

The fourth proportional to 112,435.32, 168,662.76 and 45,880.08 is: 68,824.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,435.32 : 168,662.76 = 45,880.08 : x
  2. Step 2: Convert to fraction form
    112,435.32/168,662.76 = 45,880.08/x
  3. Step 3: Cross multiply
    112,435.32x = 168,662.76 × 45,880.08
  4. Step 4: Simplify right side
    112,435.32x = 7,738,260,921.82
  5. Step 5: Solve for x
    x = 7,738,260,921.82/112,435.32
  6. Step 6: Final answer
    x = 68,824.11

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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.