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Finding the Fourth Proportional to 60,757.80, 91,063.80 and 31,160.40

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Solution

The fourth proportional to 60,757.80, 91,063.80 and 31,160.40 is: 46,703.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,757.80 : 91,063.80 = 31,160.40 : x
  2. Step 2: Convert to fraction form
    60,757.80/91,063.80 = 31,160.40/x
  3. Step 3: Cross multiply
    60,757.80x = 91,063.80 × 31,160.40
  4. Step 4: Simplify right side
    60,757.80x = 2,837,584,433.52
  5. Step 5: Solve for x
    x = 2,837,584,433.52/60,757.80
  6. Step 6: Final answer
    x = 46,703.21

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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.