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Finding the Fourth Proportional to 69,438.58, 104,453.52 and 62,943.20

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Solution

The fourth proportional to 69,438.58, 104,453.52 and 62,943.20 is: 94,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,438.58 : 104,453.52 = 62,943.20 : x
  2. Step 2: Convert to fraction form
    69,438.58/104,453.52 = 62,943.20/x
  3. Step 3: Cross multiply
    69,438.58x = 104,453.52 × 62,943.20
  4. Step 4: Simplify right side
    69,438.58x = 6,574,638,800.06
  5. Step 5: Solve for x
    x = 6,574,638,800.06/69,438.58
  6. Step 6: Final answer
    x = 94,682.79

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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.