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Finding the Fourth Proportional to 110,436.80, 165,655.20 and 40,343.46

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Solution

The fourth proportional to 110,436.80, 165,655.20 and 40,343.46 is: 60,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,436.80 : 165,655.20 = 40,343.46 : x
  2. Step 2: Convert to fraction form
    110,436.80/165,655.20 = 40,343.46/x
  3. Step 3: Cross multiply
    110,436.80x = 165,655.20 × 40,343.46
  4. Step 4: Simplify right side
    110,436.80x = 6,683,103,934.99
  5. Step 5: Solve for x
    x = 6,683,103,934.99/110,436.80
  6. Step 6: Final answer
    x = 60,515.19

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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.