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Finding the Fourth Proportional to 72,606.80, 108,913.40 and 41,016.40

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Solution

The fourth proportional to 72,606.80, 108,913.40 and 41,016.40 is: 61,526.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,606.80 : 108,913.40 = 41,016.40 : x
  2. Step 2: Convert to fraction form
    72,606.80/108,913.40 = 41,016.40/x
  3. Step 3: Cross multiply
    72,606.80x = 108,913.40 × 41,016.40
  4. Step 4: Simplify right side
    72,606.80x = 4,467,235,579.76
  5. Step 5: Solve for x
    x = 4,467,235,579.76/72,606.80
  6. Step 6: Final answer
    x = 61,526.41

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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.