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Finding the Fourth Proportional to 112,363.20, 168,739.20 and 73,094.40

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Solution

The fourth proportional to 112,363.20, 168,739.20 and 73,094.40 is: 109,768.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,363.20 : 168,739.20 = 73,094.40 : x
  2. Step 2: Convert to fraction form
    112,363.20/168,739.20 = 73,094.40/x
  3. Step 3: Cross multiply
    112,363.20x = 168,739.20 × 73,094.40
  4. Step 4: Simplify right side
    112,363.20x = 12,333,890,580.48
  5. Step 5: Solve for x
    x = 12,333,890,580.48/112,363.20
  6. Step 6: Final answer
    x = 109,768.06

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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.