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Finding the Fourth Proportional to 72,400.62, 108,453.12 and 37,266.48

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Solution

The fourth proportional to 72,400.62, 108,453.12 and 37,266.48 is: 55,823.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400.62 : 108,453.12 = 37,266.48 : x
  2. Step 2: Convert to fraction form
    72,400.62/108,453.12 = 37,266.48/x
  3. Step 3: Cross multiply
    72,400.62x = 108,453.12 × 37,266.48
  4. Step 4: Simplify right side
    72,400.62x = 4,041,666,027.42
  5. Step 5: Solve for x
    x = 4,041,666,027.42/72,400.62
  6. Step 6: Final answer
    x = 55,823.64

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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.