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Finding the Fourth Proportional to 69,315.45, 103,471.71 and 60,907.92

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Solution

The fourth proportional to 69,315.45, 103,471.71 and 60,907.92 is: 90,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,315.45 : 103,471.71 = 60,907.92 : x
  2. Step 2: Convert to fraction form
    69,315.45/103,471.71 = 60,907.92/x
  3. Step 3: Cross multiply
    69,315.45x = 103,471.71 × 60,907.92
  4. Step 4: Simplify right side
    69,315.45x = 6,302,246,634.94
  5. Step 5: Solve for x
    x = 6,302,246,634.94/69,315.45
  6. Step 6: Final answer
    x = 90,921.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.