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Finding the Fourth Proportional to 55,338.68, 76,365.70 and 31,140.99

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Solution

The fourth proportional to 55,338.68, 76,365.70 and 31,140.99 is: 42,973.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,338.68 : 76,365.70 = 31,140.99 : x
  2. Step 2: Convert to fraction form
    55,338.68/76,365.70 = 31,140.99/x
  3. Step 3: Cross multiply
    55,338.68x = 76,365.70 × 31,140.99
  4. Step 4: Simplify right side
    55,338.68x = 2,378,103,500.04
  5. Step 5: Solve for x
    x = 2,378,103,500.04/55,338.68
  6. Step 6: Final answer
    x = 42,973.62

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