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Finding the Fourth Proportional to 50,187.65, 69,085.09 and 43,378.55

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Solution

The fourth proportional to 50,187.65, 69,085.09 and 43,378.55 is: 59,712.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,187.65 : 69,085.09 = 43,378.55 : x
  2. Step 2: Convert to fraction form
    50,187.65/69,085.09 = 43,378.55/x
  3. Step 3: Cross multiply
    50,187.65x = 69,085.09 × 43,378.55
  4. Step 4: Simplify right side
    50,187.65x = 2,996,811,030.82
  5. Step 5: Solve for x
    x = 2,996,811,030.82/50,187.65
  6. Step 6: Final answer
    x = 59,712.12

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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.