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Finding the Fourth Proportional to 60,703.80, 91,055.70 and 31,179.30

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Solution

The fourth proportional to 60,703.80, 91,055.70 and 31,179.30 is: 46,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,703.80 : 91,055.70 = 31,179.30 : x
  2. Step 2: Convert to fraction form
    60,703.80/91,055.70 = 31,179.30/x
  3. Step 3: Cross multiply
    60,703.80x = 91,055.70 × 31,179.30
  4. Step 4: Simplify right side
    60,703.80x = 2,839,052,987.01
  5. Step 5: Solve for x
    x = 2,839,052,987.01/60,703.80
  6. Step 6: Final answer
    x = 46,768.95

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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.