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Finding the Fourth Proportional to 112,998.40, 169,303.20 and 73,535.20

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Solution

The fourth proportional to 112,998.40, 169,303.20 and 73,535.20 is: 110,176.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,998.40 : 169,303.20 = 73,535.20 : x
  2. Step 2: Convert to fraction form
    112,998.40/169,303.20 = 73,535.20/x
  3. Step 3: Cross multiply
    112,998.40x = 169,303.20 × 73,535.20
  4. Step 4: Simplify right side
    112,998.40x = 12,449,744,672.64
  5. Step 5: Solve for x
    x = 12,449,744,672.64/112,998.40
  6. Step 6: Final answer
    x = 110,176.29

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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.