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Finding the Fourth Proportional to 58,670.50, 80,965.21 and 31,812.97

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Solution

The fourth proportional to 58,670.50, 80,965.21 and 31,812.97 is: 43,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,670.50 : 80,965.21 = 31,812.97 : x
  2. Step 2: Convert to fraction form
    58,670.50/80,965.21 = 31,812.97/x
  3. Step 3: Cross multiply
    58,670.50x = 80,965.21 × 31,812.97
  4. Step 4: Simplify right side
    58,670.50x = 2,575,743,796.77
  5. Step 5: Solve for x
    x = 2,575,743,796.77/58,670.50
  6. Step 6: Final answer
    x = 43,901.86

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1.5x scale

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.