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Finding the Fourth Proportional to 58,218.88, 80,342.04 and 31,722.88

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Solution

The fourth proportional to 58,218.88, 80,342.04 and 31,722.88 is: 43,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,218.88 : 80,342.04 = 31,722.88 : x
  2. Step 2: Convert to fraction form
    58,218.88/80,342.04 = 31,722.88/x
  3. Step 3: Cross multiply
    58,218.88x = 80,342.04 × 31,722.88
  4. Step 4: Simplify right side
    58,218.88x = 2,548,680,893.88
  5. Step 5: Solve for x
    x = 2,548,680,893.88/58,218.88
  6. Step 6: Final answer
    x = 43,777.57

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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.