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Finding the Fourth Proportional to 112,956.40, 169,240.20 and 73,493.20

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Solution

The fourth proportional to 112,956.40, 169,240.20 and 73,493.20 is: 110,113.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,956.40 : 169,240.20 = 73,493.20 : x
  2. Step 2: Convert to fraction form
    112,956.40/169,240.20 = 73,493.20/x
  3. Step 3: Cross multiply
    112,956.40x = 169,240.20 × 73,493.20
  4. Step 4: Simplify right side
    112,956.40x = 12,438,003,866.64
  5. Step 5: Solve for x
    x = 12,438,003,866.64/112,956.40
  6. Step 6: Final answer
    x = 110,113.32

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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.