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Finding the Fourth Proportional to 58,555.20, 80,805.80 and 31,697.12

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Solution

The fourth proportional to 58,555.20, 80,805.80 and 31,697.12 is: 43,741.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,555.20 : 80,805.80 = 31,697.12 : x
  2. Step 2: Convert to fraction form
    58,555.20/80,805.80 = 31,697.12/x
  3. Step 3: Cross multiply
    58,555.20x = 80,805.80 × 31,697.12
  4. Step 4: Simplify right side
    58,555.20x = 2,561,311,420.55
  5. Step 5: Solve for x
    x = 2,561,311,420.55/58,555.20
  6. Step 6: Final answer
    x = 43,741.82

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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.