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Finding the Fourth Proportional to 65,505.81, 90,395.41 and 37,208.37

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Solution

The fourth proportional to 65,505.81, 90,395.41 and 37,208.37 is: 51,346.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,505.81 : 90,395.41 = 37,208.37 : x
  2. Step 2: Convert to fraction form
    65,505.81/90,395.41 = 37,208.37/x
  3. Step 3: Cross multiply
    65,505.81x = 90,395.41 × 37,208.37
  4. Step 4: Simplify right side
    65,505.81x = 3,363,465,675.54
  5. Step 5: Solve for x
    x = 3,363,465,675.54/65,505.81
  6. Step 6: Final answer
    x = 51,346.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.